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<br />

The past few months have ushered in a golden era for web UI. New platform capabilities have landed with tight cross-browser adoption that support more web capabilities and customization features than ever.

Here are 20 of the most exciting and impactful features that landed recently or are coming soon:

- [Container queries](https://developer.chrome.com/blog/whats-new-css-ui-2023.md.txt#container_queries)
- [Style queries](https://developer.chrome.com/blog/whats-new-css-ui-2023.md.txt#style_queries)
- [`:has()` selector](https://developer.chrome.com/blog/whats-new-css-ui-2023.md.txt#has)
- [nth-of microsyntax](https://developer.chrome.com/blog/whats-new-css-ui-2023.md.txt#nth-of_syntax)
- [`text-wrap: balance`](https://developer.chrome.com/blog/whats-new-css-ui-2023.md.txt#text-wrap_balance)
- [`initial-letter`](https://developer.chrome.com/blog/whats-new-css-ui-2023.md.txt#initial-letter)
- [Dynamic viewport units](https://developer.chrome.com/blog/whats-new-css-ui-2023.md.txt#dynamic_viewport_units)
- [Wide-gamut color spaces](https://developer.chrome.com/blog/whats-new-css-ui-2023.md.txt#wide-gamut_color_spaces)
- [`color-mix()`](https://developer.chrome.com/blog/whats-new-css-ui-2023.md.txt#color-mix)
- [Nesting](https://developer.chrome.com/blog/whats-new-css-ui-2023.md.txt#nesting)
- [Cascade layers](https://developer.chrome.com/blog/whats-new-css-ui-2023.md.txt#cascade_layers)
- [Scoped styles](https://developer.chrome.com/blog/whats-new-css-ui-2023.md.txt#scoped_css)
- [Trigonometric functions](https://developer.chrome.com/blog/whats-new-css-ui-2023.md.txt#trigonometric_functions)
- [Individual transform properties](https://developer.chrome.com/blog/whats-new-css-ui-2023.md.txt#individual_transform_properties)
- [popover](https://developer.chrome.com/blog/whats-new-css-ui-2023.md.txt#popover)
- [anchor positioning](https://developer.chrome.com/blog/whats-new-css-ui-2023.md.txt#anchor_positioning)
- [selectmenu](https://developer.chrome.com/blog/whats-new-css-ui-2023.md.txt#selectmenu)
- [Discrete property transitions](https://developer.chrome.com/blog/whats-new-css-ui-2023.md.txt#discrete_property_transitions)
- [Scroll-driven animations](https://developer.chrome.com/blog/whats-new-css-ui-2023.md.txt#scroll-driven_animations)
- [View transitions](https://developer.chrome.com/blog/whats-new-css-ui-2023.md.txt#view_transitions)

## The New Responsive

Let's get started with some new responsive design capabilities. New platform features let you build logical interfaces with components that own their responsive styling information, build interfaces that leverage system capabilities to deliver more native-feeling UIs, and let the user become a part of the design process with user preference queries for complete customizability.

### Container Queries


Browser Support

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- ![Firefox: 110.](data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 512 512'%3E%3Cdefs%3E%3CradialGradient id='ff-b' cx='428.5' cy='55.1' r='501' gradientUnits='userSpaceOnUse'%3E%3Cstop offset='.1' stop-color='%23ffbd4f'/%3E%3Cstop offset='.2' stop-color='%23ffac31'/%3E%3Cstop offset='.3' stop-color='%23ff9d17'/%3E%3Cstop offset='.3' stop-color='%23ff980e'/%3E%3Cstop offset='.4' stop-color='%23ff563b'/%3E%3Cstop offset='.5' stop-color='%23ff3750'/%3E%3Cstop offset='.7' stop-color='%23f5156c'/%3E%3Cstop offset='.8' stop-color='%23eb0878'/%3E%3Cstop offset='.9' stop-color='%23e50080'/%3E%3C/radialGradient%3E%3CradialGradient id='ff-c' cx='245.4' cy='259.9' r='501' gradientUnits='userSpaceOnUse'%3E%3Cstop offset='.3' stop-color='%23960e18'/%3E%3Cstop offset='.3' stop-color='%23b11927' stop-opacity='.7'/%3E%3Cstop offset='.4' stop-color='%23db293d' stop-opacity='.3'/%3E%3Cstop offset='.5' stop-color='%23f5334b' stop-opacity='.1'/%3E%3Cstop 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- ![Safari: 16.](data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink' width='24' height='24' viewBox='195 190 135 135'%3E%3Cdefs%3E%3ClinearGradient id='s-a' x1='132.6' x2='134.4' y1='111.7' y2='-105.3' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-color='%23d2d2d2' /%3E%3Cstop offset='.5' stop-color='%23f2f2f2' /%3E%3Cstop offset='1' stop-color='%23fff' /%3E%3C/linearGradient%3E%3ClinearGradient id='s-b' gradientUnits='userSpaceOnUse' /%3E%3ClinearGradient id='s-c' x1='65.4' x2='67.4' y1='115.7' y2='17.1' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-color='%23005ad5' /%3E%3Cstop offset='.2' stop-color='%230875f0' /%3E%3Cstop offset='.3' stop-color='%23218cee' /%3E%3Cstop offset='.6' stop-color='%2327a5f3' /%3E%3Cstop offset='.8' stop-color='%2325aaf2' /%3E%3Cstop offset='1' stop-color='%2321aaef' /%3E%3C/linearGradient%3E%3ClinearGradient id='s-d' x1='158.7' x2='176.3' y1='96.7' y2='79.5' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-color='%23c72e24' /%3E%3Cstop offset='1' stop-color='%23fd3b2f' /%3E%3C/linearGradient%3E%3CradialGradient id='s-i' cx='-69.9' cy='69.3' r='54' gradientTransform='matrix(.9 -.01 .04 2.72 -9 -120)' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-color='%2324a5f3' stop-opacity='0' /%3E%3Cstop offset='1' stop-color='%231e8ceb' /%3E%3C/radialGradient%3E%3CradialGradient id='s-j' cx='109.3' cy='13.8' r='93.1' gradientTransform='matrix(-.02 1.1 -1.04 -.02 137 -115)' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-opacity='0' /%3E%3Cstop offset='1' stop-color='%235488d6' stop-opacity='0' /%3E%3Cstop offset='1' stop-color='%235d96eb' /%3E%3C/radialGradient%3E%3C/defs%3E%3Crect width='220' height='220' x='22' y='-107' fill='url(%23s-a)' ry='49' transform='matrix(.57 0 0 .57 187 256)' /%3E%3Cg transform='translate(194 190)'%3E%3Ccircle cx='67.8' cy='67.7' fill='url(%23s-c)' paint-order='stroke fill markers' r='54' /%3E%3Ccircle cx='-69.9' cy='69.3' fill='url(%23s-i)' transform='translate(138 -2)' r='54' /%3E%3C/g%3E%3Cellipse cx='120' cy='14.2' fill='url(%23s-j)' rx='93.1' ry='93.7' transform='matrix(.58 0 0 .58 192 250)' /%3E%3Cg transform='matrix(.58 0 0 .57 197 182)'%3E%3Cpath fill='%23cac7c8' d='M46 192h1l72-48-7-9-66 57Z' /%3E%3Cpath fill='%23fbfffc' d='M46 191v1l66-57-7-9-59 65Z' /%3E%3Cpath fill='url(%23s-d)' d='m119 144-7-9 66-57-59 66Z' /%3E%3Cpath fill='%23fb645c' d='m105 126 7 9 66-57-1-1-72 49Z' /%3E%3C/g%3E%3Cpath stroke='%23fff' stroke-linecap='round' stroke-miterlimit='1' stroke-width='1.3' d='m287 278 3-2m-12-17 8-2m-8-3h4m-4-13 8 2m-8 3h4m-1-13 7 3m-4-11 7 4m-2-11 6 6m0-12 6 7m1-11 4 6m4-10 3 7m5-9 2 7m15-7-1 7m10-5-3 7m11-4-4 7m11-2-5 6m16 7-7 4m10 4-7 3m10 6-8 1m8 16-8-2m5 10-7-3m4 11-7-4m2 11-6-5m0 11-5-6m-2 11-4-7m-4 11-3-8m-6 10-1-8m-16 8 2-8m-10 5 3-7m-11 4 4-7m-11 2 5-6m-8 3 3-3m4 8 2-3m5 8 2-4m6 7 1-4m8 5v-4m8 4v-4m9 3-1-4m9 1-2-4m9 0-2-4m9-2-3-3m8-4-3-2m8-5-4-2m7-6-4-1m5-8h-4m4-8h-4m3-9-4 1m1-9-4 2m-1-9-3 2m-2-9-3 3m-4-8-2 3m-5-8-2 4m-6-6-1 3m-8-5v4m-8-4v4m-9-2 1 3m-9 0 2 3m-9 1 2 3m-9 2 3 3m-8 4 3 2m-8 5 4 2m-7 6 4 1m-4 25 4-1m-2 5 7-3m-6 7 4-2m-2 6 7-4m-13-21h8m41-41v-8m0 99v-8m49-42h-8' transform='translate(-65 8)' /%3E%3C/svg%3E)

[Source](https://developer.mozilla.org/docs/Web/CSS/Reference/At-rules/@container)

<br />

[Container queries](https://developer.mozilla.org/docs/Web/CSS/CSS_Container_Queries) recently became stable across all modern browsers. They allow you to query a parent element's size and style to determine the styles which should be applied to any of its children. Media queries can only access and leverage information from the viewport, which means they can only work on a macro view of a page layout. Container queries, on the other hand, are a more precise tool that can support any number of layouts or layouts within layouts.

In the following inbox example, the **Primary Inbox** and **Favorites** sidebar are both containers. The emails within them adjust their grid layout and show or hide the email timestamp based on available space. This is the exact same component within the page, just appearing in different views

Because we have a container query, the styles of these components are dynamic. If you adjust the page size and layout, the components respond to their individually allocated space. The sidebar becomes a top bar with more space, and we see the layout look more like the primary inbox. When there is less space, they both display in a condensed format.
<iframe allow="camera; clipboard-read; clipboard-write; encrypted-media; geolocation; microphone; midi;" loading="lazy" src="https://codepen.io/web-dot-dev/embed/eYPEOOr?height=550&amp;theme-id=light&amp;default-tab=result&amp;editable=true" style="height: 100%; width: 100%; border: 0;" title="Pen eYPEOOr by web-dot-dev on Codepen">See the Pen <a href="https://codepen.io/web-dot-dev/embed/eYPEOOr">Pen eYPEOOr by web-dot-dev on Codepen</a></iframe>

Learn more about container queries and building logical components [in this post](https://developer.chrome.com/blog/has-with-cq-m105.md.txt).

### Style Queries


Browser Support

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- ![Edge: 111.](data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink' width='24' height='24' viewBox='0 0 27600 27600'%3E%3ClinearGradient id='A' gradientUnits='userSpaceOnUse'/%3E%3ClinearGradient id='B' x1='6870' x2='24704' y1='18705' y2='18705' xlink:href='%23A'%3E%3Cstop offset='0' stop-color='%230c59a4'/%3E%3Cstop offset='1' stop-color='%23114a8b'/%3E%3C/linearGradient%3E%3ClinearGradient id='C' x1='16272' x2='5133' y1='10968' y2='23102' xlink:href='%23A'%3E%3Cstop offset='0' stop-color='%231b9de2'/%3E%3Cstop offset='.16' stop-color='%231595df'/%3E%3Cstop offset='.67' stop-color='%230680d7'/%3E%3Cstop offset='1' stop-color='%230078d4'/%3E%3C/linearGradient%3E%3CradialGradient id='D' cx='16720' cy='18747' r='9538' xlink:href='%23A'%3E%3Cstop offset='.72' stop-opacity='0'/%3E%3Cstop offset='.95' stop-opacity='.53'/%3E%3Cstop offset='1'/%3E%3C/radialGradient%3E%3CradialGradient id='E' cx='7130' cy='19866' r='14324' gradientTransform='matrix(.14843 -.98892 .79688 .1196 -8759 25542)' xlink:href='%23A'%3E%3Cstop offset='.76' stop-opacity='0'/%3E%3Cstop offset='.95' stop-opacity='.5'/%3E%3Cstop offset='1'/%3E%3C/radialGradient%3E%3CradialGradient id='F' cx='2523' cy='4680' r='20243' gradientTransform='matrix(-.03715 .99931 -2.12836 -.07913 13579 3530)' xlink:href='%23A'%3E%3Cstop offset='0' stop-color='%2335c1f1'/%3E%3Cstop offset='.11' stop-color='%2334c1ed'/%3E%3Cstop offset='.23' stop-color='%232fc2df'/%3E%3Cstop offset='.31' stop-color='%232bc3d2'/%3E%3Cstop offset='.67' stop-color='%2336c752'/%3E%3C/radialGradient%3E%3CradialGradient id='G' cx='24247' cy='7758' r='9734' gradientTransform='matrix(.28109 .95968 -.78353 .22949 24510 -16292)' xlink:href='%23A'%3E%3Cstop offset='0' stop-color='%2366eb6e'/%3E%3Cstop offset='1' stop-color='%2366eb6e' stop-opacity='0'/%3E%3C/radialGradient%3E%3Cpath id='H' d='M24105 20053a9345 9345 0 01-1053 472 10202 10202 0 01-3590 646c-4732 0-8855-3255-8855-7432 0-1175 680-2193 1643-2729-4280 180-5380 4640-5380 7253 0 7387 6810 8137 8276 8137 791 0 1984-230 2704-456l130-44a12834 12834 0 006660-5282c220-350-168-757-535-565z'/%3E%3Cpath id='I' d='M11571 25141a7913 7913 0 01-2273-2137 8145 8145 0 01-1514-4740 8093 8093 0 013093-6395 8082 8082 0 011373-859c312-148 846-414 1554-404a3236 3236 0 012569 1297 3184 3184 0 01636 1866c0-21 2446-7960-8005-7960-4390 0-8004 4166-8004 7820 0 2319 538 4170 1212 5604a12833 12833 0 007684 6757 12795 12795 0 003908 610c1414 0 2774-233 4045-656a7575 7575 0 01-6278-803z'/%3E%3Cpath id='J' d='M16231 15886c-80 105-330 250-330 566 0 260 170 512 472 723 1438 1003 4149 868 4156 868a5954 5954 0 003027-839 6147 6147 0 001133-850 6180 6180 0 001910-4437c26-2242-796-3732-1133-4392-2120-4141-6694-6525-11668-6525-7011 0-12703 5635-12798 12620 47-3654 3679-6605 7996-6605 350 0 2346 34 4200 1007 1634 858 2490 1894 3086 2921 618 1067 728 2415 728 2952s-271 1333-780 1990z'/%3E%3Cuse fill='url(%23B)' xlink:href='%23H'/%3E%3Cuse fill='url(%23D)' opacity='.35' xlink:href='%23H'/%3E%3Cuse fill='url(%23C)' xlink:href='%23I'/%3E%3Cuse fill='url(%23E)' opacity='.4' xlink:href='%23I'/%3E%3Cuse fill='url(%23F)' xlink:href='%23J'/%3E%3Cuse fill='url(%23G)' xlink:href='%23J'/%3E%3C/svg%3E)
- ![Firefox: 151.](data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 512 512'%3E%3Cdefs%3E%3CradialGradient id='ff-b' cx='428.5' cy='55.1' r='501' gradientUnits='userSpaceOnUse'%3E%3Cstop offset='.1' stop-color='%23ffbd4f'/%3E%3Cstop offset='.2' stop-color='%23ffac31'/%3E%3Cstop offset='.3' stop-color='%23ff9d17'/%3E%3Cstop offset='.3' stop-color='%23ff980e'/%3E%3Cstop offset='.4' stop-color='%23ff563b'/%3E%3Cstop offset='.5' stop-color='%23ff3750'/%3E%3Cstop offset='.7' stop-color='%23f5156c'/%3E%3Cstop offset='.8' stop-color='%23eb0878'/%3E%3Cstop offset='.9' stop-color='%23e50080'/%3E%3C/radialGradient%3E%3CradialGradient id='ff-c' cx='245.4' cy='259.9' r='501' gradientUnits='userSpaceOnUse'%3E%3Cstop offset='.3' stop-color='%23960e18'/%3E%3Cstop offset='.3' stop-color='%23b11927' stop-opacity='.7'/%3E%3Cstop offset='.4' stop-color='%23db293d' stop-opacity='.3'/%3E%3Cstop offset='.5' stop-color='%23f5334b' stop-opacity='.1'/%3E%3Cstop 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0-1 1 1 0 0 0-1 0c-9 5-65 92 10 167z' fill='url(%23ff-i)'/%3E%3Cpath d='M367 199a46 46 0 0 0-4-3l-1-1c-13-9-36-18-58-15 86 44 63 193-57 187a107 107 0 0 1-31-6 131 131 0 0 1-11-5c17 12 99 39 186-31 2-5 31-76-24-126z' fill='url(%23ff-j)'/%3E%3Cpath d='M148 277s12-41 80-41c7 0 28-20 29-26s-44 18-90-4c-51-24-89 4-89 4s15 35 57 35c-4 40 16 85 67 110l3 1c-29-15-54-44-57-79z' fill='url(%23ff-k)'/%3E%3Cpath d='M479 166c-11-25-32-52-49-60a249 249 0 0 1 25 73c-27-68-73-95-111-155a255 255 0 0 1-8-14 44 44 0 0 1-4-9 1 1 0 0 0 0-1 1 1 0 0 0-1 0c-60 35-81 101-83 134l9-1c45 0 84 25 105 62-13-9-36-18-58-14 86 43 63 192-57 186a107 107 0 0 1-31-6 131 131 0 0 1-11-5l-3-1 3 1c-29-15-54-44-57-79 0 0 12-41 80-41 7 0 28-20 29-26 0-2-42-19-58-35l-17-16a71 71 0 0 0-6-5 111 111 0 0 1-1-58c-25 11-44 29-58 44-9-12-9-52-8-60l-8 4a175 175 0 0 0-24 21 210 210 0 0 0-22 26 203 203 0 0 0-32 73l-1 2-2 15a279 279 0 0 0-4 34v1a240 240 0 0 0 477 40l1-9c5-41 0-84-15-121zm-24 13z' fill='url(%23ff-l)'/%3E%3C/svg%3E)
- ![Safari: 18.](data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink' width='24' height='24' viewBox='195 190 135 135'%3E%3Cdefs%3E%3ClinearGradient id='s-a' x1='132.6' x2='134.4' y1='111.7' y2='-105.3' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-color='%23d2d2d2' /%3E%3Cstop offset='.5' stop-color='%23f2f2f2' /%3E%3Cstop offset='1' stop-color='%23fff' /%3E%3C/linearGradient%3E%3ClinearGradient id='s-b' gradientUnits='userSpaceOnUse' /%3E%3ClinearGradient id='s-c' x1='65.4' x2='67.4' y1='115.7' y2='17.1' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-color='%23005ad5' /%3E%3Cstop offset='.2' stop-color='%230875f0' /%3E%3Cstop offset='.3' stop-color='%23218cee' /%3E%3Cstop offset='.6' stop-color='%2327a5f3' /%3E%3Cstop offset='.8' stop-color='%2325aaf2' /%3E%3Cstop offset='1' stop-color='%2321aaef' /%3E%3C/linearGradient%3E%3ClinearGradient id='s-d' x1='158.7' x2='176.3' y1='96.7' y2='79.5' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-color='%23c72e24' /%3E%3Cstop offset='1' stop-color='%23fd3b2f' /%3E%3C/linearGradient%3E%3CradialGradient id='s-i' cx='-69.9' cy='69.3' r='54' gradientTransform='matrix(.9 -.01 .04 2.72 -9 -120)' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-color='%2324a5f3' stop-opacity='0' /%3E%3Cstop offset='1' stop-color='%231e8ceb' /%3E%3C/radialGradient%3E%3CradialGradient id='s-j' cx='109.3' cy='13.8' r='93.1' gradientTransform='matrix(-.02 1.1 -1.04 -.02 137 -115)' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-opacity='0' /%3E%3Cstop offset='1' stop-color='%235488d6' stop-opacity='0' /%3E%3Cstop offset='1' stop-color='%235d96eb' /%3E%3C/radialGradient%3E%3C/defs%3E%3Crect width='220' height='220' x='22' y='-107' fill='url(%23s-a)' ry='49' transform='matrix(.57 0 0 .57 187 256)' /%3E%3Cg transform='translate(194 190)'%3E%3Ccircle cx='67.8' cy='67.7' fill='url(%23s-c)' paint-order='stroke fill markers' r='54' /%3E%3Ccircle cx='-69.9' cy='69.3' fill='url(%23s-i)' transform='translate(138 -2)' r='54' /%3E%3C/g%3E%3Cellipse cx='120' cy='14.2' fill='url(%23s-j)' rx='93.1' ry='93.7' transform='matrix(.58 0 0 .58 192 250)' /%3E%3Cg transform='matrix(.58 0 0 .57 197 182)'%3E%3Cpath fill='%23cac7c8' d='M46 192h1l72-48-7-9-66 57Z' /%3E%3Cpath fill='%23fbfffc' d='M46 191v1l66-57-7-9-59 65Z' /%3E%3Cpath fill='url(%23s-d)' d='m119 144-7-9 66-57-59 66Z' /%3E%3Cpath fill='%23fb645c' d='m105 126 7 9 66-57-1-1-72 49Z' /%3E%3C/g%3E%3Cpath stroke='%23fff' stroke-linecap='round' stroke-miterlimit='1' stroke-width='1.3' d='m287 278 3-2m-12-17 8-2m-8-3h4m-4-13 8 2m-8 3h4m-1-13 7 3m-4-11 7 4m-2-11 6 6m0-12 6 7m1-11 4 6m4-10 3 7m5-9 2 7m15-7-1 7m10-5-3 7m11-4-4 7m11-2-5 6m16 7-7 4m10 4-7 3m10 6-8 1m8 16-8-2m5 10-7-3m4 11-7-4m2 11-6-5m0 11-5-6m-2 11-4-7m-4 11-3-8m-6 10-1-8m-16 8 2-8m-10 5 3-7m-11 4 4-7m-11 2 5-6m-8 3 3-3m4 8 2-3m5 8 2-4m6 7 1-4m8 5v-4m8 4v-4m9 3-1-4m9 1-2-4m9 0-2-4m9-2-3-3m8-4-3-2m8-5-4-2m7-6-4-1m5-8h-4m4-8h-4m3-9-4 1m1-9-4 2m-1-9-3 2m-2-9-3 3m-4-8-2 3m-5-8-2 4m-6-6-1 3m-8-5v4m-8-4v4m-9-2 1 3m-9 0 2 3m-9 1 2 3m-9 2 3 3m-8 4 3 2m-8 5 4 2m-7 6 4 1m-4 25 4-1m-2 5 7-3m-6 7 4-2m-2 6 7-4m-13-21h8m41-41v-8m0 99v-8m49-42h-8' transform='translate(-65 8)' /%3E%3C/svg%3E)

<br />

The container query specification also allows you to query the style values of a parent container. This is currently partially implemented in Chrome 111, where you can use CSS custom properties to apply container styles.

The following example uses weather characteristics stored in custom property values, such as rain, sunny, and cloudy, to style the card's background and indicator icon.

```css
@container style(--sunny: true) {
 .weather-card {
   background: linear-gradient(-30deg, yellow, orange);
 }

 .weather-card:after {
   content: url(<data-uri-for-demo-brevity>);
   background: gold;
 }
}
```
<iframe allow="camera; clipboard-read; clipboard-write; encrypted-media; geolocation; microphone; midi;" loading="lazy" src="https://codepen.io/web-dot-dev/embed/KKxzYQx?height=550&amp;theme-id=light&amp;default-tab=result&amp;editable=true" style="height: 100%; width: 100%; border: 0;" title="Pen KKxzYQx by web-dot-dev on Codepen">See the Pen <a href="https://codepen.io/web-dot-dev/embed/KKxzYQx">Pen KKxzYQx by web-dot-dev on Codepen</a></iframe>

![Weather cards demo.](https://developer.chrome.com/static/blog/whats-new-css-ui-2023/image/weather-cards-demo-6148fa069c38d.png)

This is just the beginning for style queries. In the future, we'll have boolean queries to determine if a custom property value exists and reduce code repetition, and currently in discussion are [range queries](https://github.com/w3c/csswg-drafts/issues/8376) to apply styles based on a range of values. This would make it possible to apply the styles shown here using a percent value for the chance of rain or cloud cover.

You can learn more and see more demos in our [blog post on style queries](https://developer.chrome.com/blog/style-queries).

### `:has()`


Browser Support

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- ![Edge: 105.](data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink' width='24' height='24' viewBox='0 0 27600 27600'%3E%3ClinearGradient id='A' gradientUnits='userSpaceOnUse'/%3E%3ClinearGradient id='B' x1='6870' x2='24704' y1='18705' y2='18705' xlink:href='%23A'%3E%3Cstop offset='0' stop-color='%230c59a4'/%3E%3Cstop offset='1' stop-color='%23114a8b'/%3E%3C/linearGradient%3E%3ClinearGradient id='C' x1='16272' x2='5133' y1='10968' y2='23102' xlink:href='%23A'%3E%3Cstop offset='0' stop-color='%231b9de2'/%3E%3Cstop offset='.16' stop-color='%231595df'/%3E%3Cstop offset='.67' stop-color='%230680d7'/%3E%3Cstop offset='1' stop-color='%230078d4'/%3E%3C/linearGradient%3E%3CradialGradient id='D' cx='16720' cy='18747' r='9538' xlink:href='%23A'%3E%3Cstop offset='.72' stop-opacity='0'/%3E%3Cstop offset='.95' stop-opacity='.53'/%3E%3Cstop offset='1'/%3E%3C/radialGradient%3E%3CradialGradient id='E' cx='7130' cy='19866' r='14324' gradientTransform='matrix(.14843 -.98892 .79688 .1196 -8759 25542)' xlink:href='%23A'%3E%3Cstop offset='.76' stop-opacity='0'/%3E%3Cstop offset='.95' stop-opacity='.5'/%3E%3Cstop offset='1'/%3E%3C/radialGradient%3E%3CradialGradient id='F' cx='2523' cy='4680' r='20243' gradientTransform='matrix(-.03715 .99931 -2.12836 -.07913 13579 3530)' xlink:href='%23A'%3E%3Cstop offset='0' stop-color='%2335c1f1'/%3E%3Cstop offset='.11' stop-color='%2334c1ed'/%3E%3Cstop offset='.23' stop-color='%232fc2df'/%3E%3Cstop offset='.31' stop-color='%232bc3d2'/%3E%3Cstop offset='.67' stop-color='%2336c752'/%3E%3C/radialGradient%3E%3CradialGradient id='G' cx='24247' cy='7758' r='9734' gradientTransform='matrix(.28109 .95968 -.78353 .22949 24510 -16292)' xlink:href='%23A'%3E%3Cstop offset='0' stop-color='%2366eb6e'/%3E%3Cstop offset='1' stop-color='%2366eb6e' stop-opacity='0'/%3E%3C/radialGradient%3E%3Cpath id='H' d='M24105 20053a9345 9345 0 01-1053 472 10202 10202 0 01-3590 646c-4732 0-8855-3255-8855-7432 0-1175 680-2193 1643-2729-4280 180-5380 4640-5380 7253 0 7387 6810 8137 8276 8137 791 0 1984-230 2704-456l130-44a12834 12834 0 006660-5282c220-350-168-757-535-565z'/%3E%3Cpath id='I' d='M11571 25141a7913 7913 0 01-2273-2137 8145 8145 0 01-1514-4740 8093 8093 0 013093-6395 8082 8082 0 011373-859c312-148 846-414 1554-404a3236 3236 0 012569 1297 3184 3184 0 01636 1866c0-21 2446-7960-8005-7960-4390 0-8004 4166-8004 7820 0 2319 538 4170 1212 5604a12833 12833 0 007684 6757 12795 12795 0 003908 610c1414 0 2774-233 4045-656a7575 7575 0 01-6278-803z'/%3E%3Cpath id='J' d='M16231 15886c-80 105-330 250-330 566 0 260 170 512 472 723 1438 1003 4149 868 4156 868a5954 5954 0 003027-839 6147 6147 0 001133-850 6180 6180 0 001910-4437c26-2242-796-3732-1133-4392-2120-4141-6694-6525-11668-6525-7011 0-12703 5635-12798 12620 47-3654 3679-6605 7996-6605 350 0 2346 34 4200 1007 1634 858 2490 1894 3086 2921 618 1067 728 2415 728 2952s-271 1333-780 1990z'/%3E%3Cuse fill='url(%23B)' xlink:href='%23H'/%3E%3Cuse fill='url(%23D)' opacity='.35' xlink:href='%23H'/%3E%3Cuse fill='url(%23C)' xlink:href='%23I'/%3E%3Cuse fill='url(%23E)' opacity='.4' xlink:href='%23I'/%3E%3Cuse fill='url(%23F)' xlink:href='%23J'/%3E%3Cuse fill='url(%23G)' xlink:href='%23J'/%3E%3C/svg%3E)
- ![Firefox: 121.](data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 512 512'%3E%3Cdefs%3E%3CradialGradient id='ff-b' cx='428.5' cy='55.1' r='501' gradientUnits='userSpaceOnUse'%3E%3Cstop offset='.1' stop-color='%23ffbd4f'/%3E%3Cstop offset='.2' stop-color='%23ffac31'/%3E%3Cstop offset='.3' stop-color='%23ff9d17'/%3E%3Cstop offset='.3' stop-color='%23ff980e'/%3E%3Cstop offset='.4' stop-color='%23ff563b'/%3E%3Cstop offset='.5' stop-color='%23ff3750'/%3E%3Cstop offset='.7' stop-color='%23f5156c'/%3E%3Cstop offset='.8' stop-color='%23eb0878'/%3E%3Cstop offset='.9' stop-color='%23e50080'/%3E%3C/radialGradient%3E%3CradialGradient id='ff-c' cx='245.4' cy='259.9' r='501' gradientUnits='userSpaceOnUse'%3E%3Cstop offset='.3' stop-color='%23960e18'/%3E%3Cstop offset='.3' stop-color='%23b11927' stop-opacity='.7'/%3E%3Cstop offset='.4' stop-color='%23db293d' stop-opacity='.3'/%3E%3Cstop offset='.5' stop-color='%23f5334b' stop-opacity='.1'/%3E%3Cstop 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[Source](https://developer.mozilla.org/docs/Web/CSS/Reference/Selectors/:has)

<br />

Speaking of powerful, dynamic features, the [:has() selector](https://developer.chrome.com/blog/has-m105.md.txt) is one of the most powerful new CSS capabilities landing in modern browsers. With `:has()`, you can apply styles by checking to see if a parent element contains the presence of specific children, or if those children are in a specific state. This means, we essentially now have a parent selector.

Building on the container query example, you can use `:has()` to make the components even more dynamic. In it, an item with a "star" element gets a gray background applied to it, and an item with a checked checkbox a blue background.

![Screenshot of demo](https://developer.chrome.com/static/blog/whats-new-css-ui-2023/image/screenshot-demo-f81c05a2ccfea.png)

But this API isn't limited to parent selection. You can also style any children within the parent. For example, the title is bold when the item has the star element present. This is accomplished with `.item:has(.star) .title`. Using the `:has()` selector gives you access to parent elements, child elements, and even sibling elements, making this a really flexible API, with new use cases popping up every day.

> [!NOTE]
> **Note:** To prevent rendering performance slowdowns in large DOM trees, we recommend that you scope this selector as closely as possible. For example, using `:has()` to check for matches on the root html element would be slower than checking for matches in a nav bar or in a card element with a smaller tree.

Learn more and explore some more demos, check out [this blog post](https://developer.chrome.com/blog/has-m105.md.txt) all about `:has()`.

### nth-of syntax


Browser Support

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<br />

The web platform now has more advanced nth-child selection. The advanced nth-child syntax gives a new keyword ("of"), which lets you use the existing micro syntax of An+B, with a more specific subset within which to search.

If you use regular nth-child, such as `:nth-child(2)` on the special class, the browser will select the element that has the class special applied to it, and also is the second child. This is in contrast to `:nth-child(2 of .special)` which will first pre-filter all `.special` elements, and then pick the second one from that list.
<iframe allow="camera; clipboard-read; clipboard-write; encrypted-media; geolocation; microphone; midi;" loading="lazy" src="https://codepen.io/web-dot-dev/embed/oNMRaQq?height=550&amp;theme-id=light&amp;default-tab=result&amp;editable=true" style="height: 100%; width: 100%; border: 0;" title="Pen oNMRaQq by web-dot-dev on Codepen">See the Pen <a href="https://codepen.io/web-dot-dev/embed/oNMRaQq">Pen oNMRaQq by web-dot-dev on Codepen</a></iframe>

Explore this feature further in our [article on nth-of syntax](https://developer.chrome.com/articles/css-nth-child-of-s).

### `text-wrap: balance`

Selectors and style queries aren't the only places that we can embed logic within our styles; typography is another one. From Chrome 114, you can use text-wrap balancing for headings, using the `text-wrap` property with the value `balance`.
[Try a demo](https://codepen.io/web-dot-dev/pen/eYLwpRx)

To balance the text, the browser effectively performs a binary search for the smallest width which doesn't cause any additional lines, stopping at one CSS pixel (not display pixel). To further minimize steps in the binary search the browser starts with 80% of the average line width.
[Try a demo](https://codepen.io/web-dot-dev/pen/KKxjpQm)

> [!NOTE]
> **Note:** While this is a great progressive enhancement you can try out today, it's important to note that this API works only up to 4 lines of text, so it's great for titles and headlines, but likely not what you're looking for with longer pieces of content.

Learn more about it in [this article](https://developer.chrome.com/blog/css-text-wrap-balance).

### `initial-letter`


Browser Support

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[Source](https://developer.mozilla.org/docs/Web/CSS/Reference/Properties/initial-letter)

<br />

Another nice improvement to web typography is `initial-letter`. This CSS property gives you better control for inset drop cap styling.

You use `initial-letter` on the `:first-letter` pseudo element to specify:
The size of the letter based on how many lines it occupies.
The letter's block-offset, or "sink", for where the letter will sit.
<iframe allow="camera; clipboard-read; clipboard-write; encrypted-media; geolocation; microphone; midi;" loading="lazy" src="https://codepen.io/web-dot-dev/embed/MWBErYp?height=450&amp;theme-id=light&amp;default-tab=result&amp;editable=true" style="height: 100%; width: 100%; border: 0;" title="Pen MWBErYp by web-dot-dev on Codepen">See the Pen <a href="https://codepen.io/web-dot-dev/embed/MWBErYp">Pen MWBErYp by web-dot-dev on Codepen</a></iframe>

Learn more about using `intial-letter` [here](https://developer.chrome.com/blog/control-your-drop-caps-with-css-initial-letter.md.txt).

### Dynamic viewport units


Browser Support

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- ![Firefox: 101.](data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 512 512'%3E%3Cdefs%3E%3CradialGradient id='ff-b' cx='428.5' cy='55.1' r='501' gradientUnits='userSpaceOnUse'%3E%3Cstop offset='.1' stop-color='%23ffbd4f'/%3E%3Cstop offset='.2' stop-color='%23ffac31'/%3E%3Cstop offset='.3' stop-color='%23ff9d17'/%3E%3Cstop offset='.3' stop-color='%23ff980e'/%3E%3Cstop offset='.4' stop-color='%23ff563b'/%3E%3Cstop offset='.5' stop-color='%23ff3750'/%3E%3Cstop offset='.7' stop-color='%23f5156c'/%3E%3Cstop offset='.8' stop-color='%23eb0878'/%3E%3Cstop offset='.9' stop-color='%23e50080'/%3E%3C/radialGradient%3E%3CradialGradient id='ff-c' cx='245.4' cy='259.9' r='501' gradientUnits='userSpaceOnUse'%3E%3Cstop offset='.3' stop-color='%23960e18'/%3E%3Cstop offset='.3' stop-color='%23b11927' stop-opacity='.7'/%3E%3Cstop offset='.4' stop-color='%23db293d' stop-opacity='.3'/%3E%3Cstop offset='.5' stop-color='%23f5334b' stop-opacity='.1'/%3E%3Cstop 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- ![Safari: 15.4.](data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink' width='24' height='24' viewBox='195 190 135 135'%3E%3Cdefs%3E%3ClinearGradient id='s-a' x1='132.6' x2='134.4' y1='111.7' y2='-105.3' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-color='%23d2d2d2' /%3E%3Cstop offset='.5' stop-color='%23f2f2f2' /%3E%3Cstop offset='1' stop-color='%23fff' /%3E%3C/linearGradient%3E%3ClinearGradient id='s-b' gradientUnits='userSpaceOnUse' /%3E%3ClinearGradient id='s-c' x1='65.4' x2='67.4' y1='115.7' y2='17.1' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-color='%23005ad5' /%3E%3Cstop offset='.2' stop-color='%230875f0' /%3E%3Cstop offset='.3' stop-color='%23218cee' /%3E%3Cstop offset='.6' stop-color='%2327a5f3' /%3E%3Cstop offset='.8' stop-color='%2325aaf2' /%3E%3Cstop offset='1' stop-color='%2321aaef' /%3E%3C/linearGradient%3E%3ClinearGradient id='s-d' x1='158.7' x2='176.3' y1='96.7' y2='79.5' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-color='%23c72e24' /%3E%3Cstop offset='1' stop-color='%23fd3b2f' /%3E%3C/linearGradient%3E%3CradialGradient id='s-i' cx='-69.9' cy='69.3' r='54' gradientTransform='matrix(.9 -.01 .04 2.72 -9 -120)' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-color='%2324a5f3' stop-opacity='0' /%3E%3Cstop offset='1' stop-color='%231e8ceb' /%3E%3C/radialGradient%3E%3CradialGradient id='s-j' cx='109.3' cy='13.8' r='93.1' gradientTransform='matrix(-.02 1.1 -1.04 -.02 137 -115)' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-opacity='0' /%3E%3Cstop offset='1' stop-color='%235488d6' stop-opacity='0' /%3E%3Cstop offset='1' stop-color='%235d96eb' /%3E%3C/radialGradient%3E%3C/defs%3E%3Crect width='220' height='220' x='22' y='-107' fill='url(%23s-a)' ry='49' transform='matrix(.57 0 0 .57 187 256)' /%3E%3Cg transform='translate(194 190)'%3E%3Ccircle cx='67.8' cy='67.7' fill='url(%23s-c)' paint-order='stroke fill markers' r='54' /%3E%3Ccircle cx='-69.9' cy='69.3' fill='url(%23s-i)' transform='translate(138 -2)' r='54' /%3E%3C/g%3E%3Cellipse cx='120' cy='14.2' fill='url(%23s-j)' rx='93.1' ry='93.7' transform='matrix(.58 0 0 .58 192 250)' /%3E%3Cg transform='matrix(.58 0 0 .57 197 182)'%3E%3Cpath fill='%23cac7c8' d='M46 192h1l72-48-7-9-66 57Z' /%3E%3Cpath fill='%23fbfffc' d='M46 191v1l66-57-7-9-59 65Z' /%3E%3Cpath fill='url(%23s-d)' d='m119 144-7-9 66-57-59 66Z' /%3E%3Cpath fill='%23fb645c' d='m105 126 7 9 66-57-1-1-72 49Z' /%3E%3C/g%3E%3Cpath stroke='%23fff' stroke-linecap='round' stroke-miterlimit='1' stroke-width='1.3' d='m287 278 3-2m-12-17 8-2m-8-3h4m-4-13 8 2m-8 3h4m-1-13 7 3m-4-11 7 4m-2-11 6 6m0-12 6 7m1-11 4 6m4-10 3 7m5-9 2 7m15-7-1 7m10-5-3 7m11-4-4 7m11-2-5 6m16 7-7 4m10 4-7 3m10 6-8 1m8 16-8-2m5 10-7-3m4 11-7-4m2 11-6-5m0 11-5-6m-2 11-4-7m-4 11-3-8m-6 10-1-8m-16 8 2-8m-10 5 3-7m-11 4 4-7m-11 2 5-6m-8 3 3-3m4 8 2-3m5 8 2-4m6 7 1-4m8 5v-4m8 4v-4m9 3-1-4m9 1-2-4m9 0-2-4m9-2-3-3m8-4-3-2m8-5-4-2m7-6-4-1m5-8h-4m4-8h-4m3-9-4 1m1-9-4 2m-1-9-3 2m-2-9-3 3m-4-8-2 3m-5-8-2 4m-6-6-1 3m-8-5v4m-8-4v4m-9-2 1 3m-9 0 2 3m-9 1 2 3m-9 2 3 3m-8 4 3 2m-8 5 4 2m-7 6 4 1m-4 25 4-1m-2 5 7-3m-6 7 4-2m-2 6 7-4m-13-21h8m41-41v-8m0 99v-8m49-42h-8' transform='translate(-65 8)' /%3E%3C/svg%3E)

<br />

One common problem web developers face today is accurate and consistent full-viewport sizing, especially on mobile devices. As a developer you want `100vh` (100% of the viewport height) to mean "be as tall as the viewport", but the `vh` unit doesn't account for things like retracting navigation bars on mobile, so sometimes it ends up too long and causes scroll.

![Showing too many scrollbars](https://developer.chrome.com/static/blog/whats-new-css-ui-2023/image/showing-too-many-scrollba-31e6147e96839.png)

To resolve this issue, we now have new unit values on the web platform, including:
- Small viewport height and width (or `svh` and `svw`), which represent the smallest active viewport size.
- Large viewport height and width (`lvh` and `lvw`), which represent the largest size.
- Dynamic viewport height and width (`dvh` and `dvw`).

Dynamic viewport units change in value when the additional dynamic browser toolbars, such as the address at the top or tab bar at the bottom, are visible and when they are not.

![New viewport units visualized](https://developer.chrome.com/static/blog/whats-new-css-ui-2023/image/new-viewport-units-visual-909a467b609.png)

> [!NOTE]
> **Note:** Note that the dynamic viewport units do not take the presence of the Virtual Keyboard into account. From Chrome 108 you can [set a meta-tag to change this behavior](https://developer.chrome.com/blog/viewport-resize-behavior.md.txt#opting_in_to_a_different_behavior).

For more information about these new units, read [The large, small, and dynamic viewport units](https://web.dev/blog/viewport-units).

### Wide-gamut color spaces


Browser Support

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[Source](https://developer.mozilla.org/docs/Web/CSS/Reference/Values/color_value/oklch)

<br />

Another new key addition to the web platform are wide-gamut color spaces. Before wide-gamut color became available on the web platform, you could take a photograph with vivid colors, viewable on modern devices, but you couldn't get a button, text color, or background to match those vivid values.
A series of images are shown transitioning between wide and narrow color gamuts, illustrating color vividness and its effects.  
[Try it for yourself](https://ciechanow.ski/color-spaces/#:~:text=you%20can%20drag%20the%20slider%20to%20see%20how%20the%20extent%20of%20the%20chromaticity%20triangle%20corresponds%20to%20the%20representable%20colors.)

But now we have a range of new color spaces on the web platform including REC2020, P3, XYZ, LAB, OKLAB, LCH, and OKLCH. Meet the new web color spaces, and more, in the [HD Color Guide](https://developer.chrome.com/docs/css-ui/high-definition-css-color-guide.md.txt#meet-the-new-web-color-spaces).

![Five stacked triangles of varying color to help illustrate
the relationship and size of each of the new color spaces.](https://developer.chrome.com/static/blog/whats-new-css-ui-2023/image/five-stacked-triangles-v-2b1f07524208d.png)

And you can immediately see in DevTools how the color range has expanded, with that white line delineating where the srgb range ends, and where the wider-gamut color range begins.

![DevTools showing a gamut line in the color picker.](https://developer.chrome.com/static/blog/whats-new-css-ui-2023/image/devtools-showing-gamut-l-5ccc1744192da.png)

Lots more tooling available for color! Don't miss all the great gradient improvements either. There's even a brand new tool Adam Argyle built to help you try out a new web color picker and gradient builder, try it out at [gradient.style](https://gradient.style).

### color-mix()


Browser Support

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[Source](https://developer.mozilla.org/docs/Web/CSS/Reference/Values/color_value/color-mix)

<br />

Expanding on expanded color spaces is the [`color-mix()`](https://developer.chrome.com/blog/css-color-mix) function. This function supports the mixing of two color values to create new values based on the channels of the colors getting mixed. The color space in which you mix affects the results. Working in a more perceptual color space like oklch will run through a different color range than something like srgb.

```css
color-mix(in srgb, blue, white);
color-mix(in srgb-linear, blue, white);
color-mix(in lch, blue, white);
color-mix(in oklch, blue, white);
color-mix(in lab, blue, white);
color-mix(in oklab, blue, white);
color-mix(in xyz, blue, white);
```
![7 color spaces (srgb, linear-srgb, lch, oklch, lab, oklab, xyz) each shown having different results. Many are pink or purple, few are actually still blue.](https://developer.chrome.com/static/blog/whats-new-css-ui-2023/image/7-color-spaces-srgb-lin-b67f50cdf456f.png) [Try the demo](https://codepen.io/web-dot-dev/pen/eYjKMVV)

The `color-mix()` function provides a long-requested capability: the ability to preserve opaque color values while adding some transparency to them. Now, you can use your brand color variables while creating variations of those colors at different opacities. The way to do this is to mix a color with transparent. When you mix your brand color blue with 10% transparent, you get a 90% opaque brand color. You can see how this enables you to quickly build color systems.
<iframe allow="camera; clipboard-read; clipboard-write; encrypted-media; geolocation; microphone; midi;" loading="lazy" src="https://codepen.io/web-dot-dev/embed/BaqryZm?height=500&amp;theme-id=light&amp;default-tab=result&amp;editable=true" style="height: 100%; width: 100%; border: 0;" title="Pen BaqryZm by web-dot-dev on Codepen">See the Pen <a href="https://codepen.io/web-dot-dev/embed/BaqryZm">Pen BaqryZm by web-dot-dev on Codepen</a></iframe>

You can see this in action in Chrome DevTools today with a really nice preview venn diagram icon in the [styles pane](https://developer.chrome.com/docs/devtools/css/color.md.txt#change-colors).

![DevTools screenshot with the venn diagram color-mix icon](https://developer.chrome.com/static/blog/whats-new-css-ui-2023/image/devtools-screenshot-the-d54641ee75ee7.png)

See more examples and details in our [blog post on color-mix](https://developer.chrome.com/blog/css-color-mix) or try out this color-mix() [playground](https://color-mix.style).
<iframe allow="camera; clipboard-read; clipboard-write; encrypted-media; geolocation; microphone; midi;" loading="lazy" src="https://codepen.io/web-dot-dev/embed/JjBZLrm?height=500&amp;theme-id=light&amp;default-tab=result&amp;editable=true" style="height: 100%; width: 100%; border: 0;" title="Pen JjBZLrm by web-dot-dev on Codepen">See the Pen <a href="https://codepen.io/web-dot-dev/embed/JjBZLrm">Pen JjBZLrm by web-dot-dev on Codepen</a></iframe>

## CSS Foundations

Building new capabilities that have clear user wins is one part of the equation, but many of the features landing in Chrome have a goal of improving developer experience, and creating more reliable and organized CSS architecture. These features include CSS nesting, cascade layers, scoped styles, trigonometric functions, and individual transform properties.

### Nesting


Browser Support

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- ![Safari: 17.2.](data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink' width='24' height='24' viewBox='195 190 135 135'%3E%3Cdefs%3E%3ClinearGradient id='s-a' x1='132.6' x2='134.4' y1='111.7' y2='-105.3' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-color='%23d2d2d2' /%3E%3Cstop offset='.5' stop-color='%23f2f2f2' /%3E%3Cstop offset='1' stop-color='%23fff' /%3E%3C/linearGradient%3E%3ClinearGradient id='s-b' gradientUnits='userSpaceOnUse' /%3E%3ClinearGradient id='s-c' x1='65.4' x2='67.4' y1='115.7' y2='17.1' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-color='%23005ad5' /%3E%3Cstop offset='.2' stop-color='%230875f0' /%3E%3Cstop offset='.3' stop-color='%23218cee' /%3E%3Cstop offset='.6' stop-color='%2327a5f3' /%3E%3Cstop offset='.8' stop-color='%2325aaf2' /%3E%3Cstop offset='1' stop-color='%2321aaef' /%3E%3C/linearGradient%3E%3ClinearGradient id='s-d' x1='158.7' x2='176.3' y1='96.7' y2='79.5' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-color='%23c72e24' /%3E%3Cstop offset='1' stop-color='%23fd3b2f' /%3E%3C/linearGradient%3E%3CradialGradient id='s-i' cx='-69.9' cy='69.3' r='54' gradientTransform='matrix(.9 -.01 .04 2.72 -9 -120)' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-color='%2324a5f3' stop-opacity='0' /%3E%3Cstop offset='1' stop-color='%231e8ceb' /%3E%3C/radialGradient%3E%3CradialGradient id='s-j' cx='109.3' cy='13.8' r='93.1' gradientTransform='matrix(-.02 1.1 -1.04 -.02 137 -115)' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-opacity='0' /%3E%3Cstop offset='1' stop-color='%235488d6' stop-opacity='0' /%3E%3Cstop offset='1' stop-color='%235d96eb' /%3E%3C/radialGradient%3E%3C/defs%3E%3Crect width='220' height='220' x='22' y='-107' fill='url(%23s-a)' ry='49' transform='matrix(.57 0 0 .57 187 256)' /%3E%3Cg transform='translate(194 190)'%3E%3Ccircle cx='67.8' cy='67.7' fill='url(%23s-c)' paint-order='stroke fill markers' r='54' /%3E%3Ccircle cx='-69.9' cy='69.3' fill='url(%23s-i)' transform='translate(138 -2)' r='54' /%3E%3C/g%3E%3Cellipse cx='120' cy='14.2' fill='url(%23s-j)' rx='93.1' ry='93.7' transform='matrix(.58 0 0 .58 192 250)' /%3E%3Cg transform='matrix(.58 0 0 .57 197 182)'%3E%3Cpath fill='%23cac7c8' d='M46 192h1l72-48-7-9-66 57Z' /%3E%3Cpath fill='%23fbfffc' d='M46 191v1l66-57-7-9-59 65Z' /%3E%3Cpath fill='url(%23s-d)' d='m119 144-7-9 66-57-59 66Z' /%3E%3Cpath fill='%23fb645c' d='m105 126 7 9 66-57-1-1-72 49Z' /%3E%3C/g%3E%3Cpath stroke='%23fff' stroke-linecap='round' stroke-miterlimit='1' stroke-width='1.3' d='m287 278 3-2m-12-17 8-2m-8-3h4m-4-13 8 2m-8 3h4m-1-13 7 3m-4-11 7 4m-2-11 6 6m0-12 6 7m1-11 4 6m4-10 3 7m5-9 2 7m15-7-1 7m10-5-3 7m11-4-4 7m11-2-5 6m16 7-7 4m10 4-7 3m10 6-8 1m8 16-8-2m5 10-7-3m4 11-7-4m2 11-6-5m0 11-5-6m-2 11-4-7m-4 11-3-8m-6 10-1-8m-16 8 2-8m-10 5 3-7m-11 4 4-7m-11 2 5-6m-8 3 3-3m4 8 2-3m5 8 2-4m6 7 1-4m8 5v-4m8 4v-4m9 3-1-4m9 1-2-4m9 0-2-4m9-2-3-3m8-4-3-2m8-5-4-2m7-6-4-1m5-8h-4m4-8h-4m3-9-4 1m1-9-4 2m-1-9-3 2m-2-9-3 3m-4-8-2 3m-5-8-2 4m-6-6-1 3m-8-5v4m-8-4v4m-9-2 1 3m-9 0 2 3m-9 1 2 3m-9 2 3 3m-8 4 3 2m-8 5 4 2m-7 6 4 1m-4 25 4-1m-2 5 7-3m-6 7 4-2m-2 6 7-4m-13-21h8m41-41v-8m0 99v-8m49-42h-8' transform='translate(-65 8)' /%3E%3C/svg%3E)

[Source](https://developer.mozilla.org/docs/Web/CSS/Reference/Selectors/Nesting_selector)

<br />

CSS nesting, something folks love from Sass, and one of the top CSS developer requests for years, is finally landing on the web platform. Nesting allows developers to write in a more succinct, grouped format that reduces redundancy.

```css
.card {}
.card:hover {}

/* can be done with nesting like */
.card {
  &:hover {

  }
}
```

You can also nest [Media Queries](https://developer.chrome.com/learn/design/media-queries), which also means you can nest [Container Queries](https://web.dev/articles/cq-stable). In the following example, a card is changed from a portrait layout to a landscape layout if there's enough width in it's container:

```css
.card {
  display: grid;
  gap: 1rem;

  @container (width >= 480px) {
    display: flex;
  }
}
```

The layout adjustment to `flex` occurs when the container has more (or equal to) `480px` of inline space available. The browser will simply apply that new display style when the conditions are met.

For more information and examples, check out our post on [CSS nesting](https://developer.chrome.com/articles/css-nesting).

### Cascade layers


Browser Support

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- ![Edge: 99.](data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink' width='24' height='24' viewBox='0 0 27600 27600'%3E%3ClinearGradient id='A' gradientUnits='userSpaceOnUse'/%3E%3ClinearGradient id='B' x1='6870' x2='24704' y1='18705' y2='18705' xlink:href='%23A'%3E%3Cstop offset='0' stop-color='%230c59a4'/%3E%3Cstop offset='1' stop-color='%23114a8b'/%3E%3C/linearGradient%3E%3ClinearGradient id='C' x1='16272' x2='5133' y1='10968' y2='23102' xlink:href='%23A'%3E%3Cstop offset='0' stop-color='%231b9de2'/%3E%3Cstop offset='.16' stop-color='%231595df'/%3E%3Cstop offset='.67' stop-color='%230680d7'/%3E%3Cstop offset='1' stop-color='%230078d4'/%3E%3C/linearGradient%3E%3CradialGradient id='D' cx='16720' cy='18747' r='9538' xlink:href='%23A'%3E%3Cstop offset='.72' stop-opacity='0'/%3E%3Cstop offset='.95' stop-opacity='.53'/%3E%3Cstop offset='1'/%3E%3C/radialGradient%3E%3CradialGradient id='E' cx='7130' cy='19866' r='14324' gradientTransform='matrix(.14843 -.98892 .79688 .1196 -8759 25542)' xlink:href='%23A'%3E%3Cstop offset='.76' stop-opacity='0'/%3E%3Cstop offset='.95' stop-opacity='.5'/%3E%3Cstop offset='1'/%3E%3C/radialGradient%3E%3CradialGradient id='F' cx='2523' cy='4680' r='20243' gradientTransform='matrix(-.03715 .99931 -2.12836 -.07913 13579 3530)' xlink:href='%23A'%3E%3Cstop offset='0' stop-color='%2335c1f1'/%3E%3Cstop offset='.11' stop-color='%2334c1ed'/%3E%3Cstop offset='.23' stop-color='%232fc2df'/%3E%3Cstop offset='.31' stop-color='%232bc3d2'/%3E%3Cstop offset='.67' stop-color='%2336c752'/%3E%3C/radialGradient%3E%3CradialGradient id='G' cx='24247' cy='7758' r='9734' gradientTransform='matrix(.28109 .95968 -.78353 .22949 24510 -16292)' xlink:href='%23A'%3E%3Cstop offset='0' stop-color='%2366eb6e'/%3E%3Cstop offset='1' stop-color='%2366eb6e' stop-opacity='0'/%3E%3C/radialGradient%3E%3Cpath id='H' d='M24105 20053a9345 9345 0 01-1053 472 10202 10202 0 01-3590 646c-4732 0-8855-3255-8855-7432 0-1175 680-2193 1643-2729-4280 180-5380 4640-5380 7253 0 7387 6810 8137 8276 8137 791 0 1984-230 2704-456l130-44a12834 12834 0 006660-5282c220-350-168-757-535-565z'/%3E%3Cpath id='I' d='M11571 25141a7913 7913 0 01-2273-2137 8145 8145 0 01-1514-4740 8093 8093 0 013093-6395 8082 8082 0 011373-859c312-148 846-414 1554-404a3236 3236 0 012569 1297 3184 3184 0 01636 1866c0-21 2446-7960-8005-7960-4390 0-8004 4166-8004 7820 0 2319 538 4170 1212 5604a12833 12833 0 007684 6757 12795 12795 0 003908 610c1414 0 2774-233 4045-656a7575 7575 0 01-6278-803z'/%3E%3Cpath id='J' d='M16231 15886c-80 105-330 250-330 566 0 260 170 512 472 723 1438 1003 4149 868 4156 868a5954 5954 0 003027-839 6147 6147 0 001133-850 6180 6180 0 001910-4437c26-2242-796-3732-1133-4392-2120-4141-6694-6525-11668-6525-7011 0-12703 5635-12798 12620 47-3654 3679-6605 7996-6605 350 0 2346 34 4200 1007 1634 858 2490 1894 3086 2921 618 1067 728 2415 728 2952s-271 1333-780 1990z'/%3E%3Cuse fill='url(%23B)' xlink:href='%23H'/%3E%3Cuse fill='url(%23D)' opacity='.35' xlink:href='%23H'/%3E%3Cuse fill='url(%23C)' xlink:href='%23I'/%3E%3Cuse fill='url(%23E)' opacity='.4' xlink:href='%23I'/%3E%3Cuse fill='url(%23F)' xlink:href='%23J'/%3E%3Cuse fill='url(%23G)' xlink:href='%23J'/%3E%3C/svg%3E)
- ![Firefox: 97.](data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 512 512'%3E%3Cdefs%3E%3CradialGradient id='ff-b' cx='428.5' cy='55.1' r='501' gradientUnits='userSpaceOnUse'%3E%3Cstop offset='.1' stop-color='%23ffbd4f'/%3E%3Cstop offset='.2' stop-color='%23ffac31'/%3E%3Cstop offset='.3' stop-color='%23ff9d17'/%3E%3Cstop offset='.3' stop-color='%23ff980e'/%3E%3Cstop offset='.4' stop-color='%23ff563b'/%3E%3Cstop offset='.5' stop-color='%23ff3750'/%3E%3Cstop offset='.7' stop-color='%23f5156c'/%3E%3Cstop offset='.8' stop-color='%23eb0878'/%3E%3Cstop offset='.9' stop-color='%23e50080'/%3E%3C/radialGradient%3E%3CradialGradient id='ff-c' cx='245.4' cy='259.9' r='501' gradientUnits='userSpaceOnUse'%3E%3Cstop offset='.3' stop-color='%23960e18'/%3E%3Cstop offset='.3' stop-color='%23b11927' stop-opacity='.7'/%3E%3Cstop offset='.4' stop-color='%23db293d' stop-opacity='.3'/%3E%3Cstop offset='.5' stop-color='%23f5334b' stop-opacity='.1'/%3E%3Cstop 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0-1 1 1 0 0 0-1 0c-9 5-65 92 10 167z' fill='url(%23ff-i)'/%3E%3Cpath d='M367 199a46 46 0 0 0-4-3l-1-1c-13-9-36-18-58-15 86 44 63 193-57 187a107 107 0 0 1-31-6 131 131 0 0 1-11-5c17 12 99 39 186-31 2-5 31-76-24-126z' fill='url(%23ff-j)'/%3E%3Cpath d='M148 277s12-41 80-41c7 0 28-20 29-26s-44 18-90-4c-51-24-89 4-89 4s15 35 57 35c-4 40 16 85 67 110l3 1c-29-15-54-44-57-79z' fill='url(%23ff-k)'/%3E%3Cpath d='M479 166c-11-25-32-52-49-60a249 249 0 0 1 25 73c-27-68-73-95-111-155a255 255 0 0 1-8-14 44 44 0 0 1-4-9 1 1 0 0 0 0-1 1 1 0 0 0-1 0c-60 35-81 101-83 134l9-1c45 0 84 25 105 62-13-9-36-18-58-14 86 43 63 192-57 186a107 107 0 0 1-31-6 131 131 0 0 1-11-5l-3-1 3 1c-29-15-54-44-57-79 0 0 12-41 80-41 7 0 28-20 29-26 0-2-42-19-58-35l-17-16a71 71 0 0 0-6-5 111 111 0 0 1-1-58c-25 11-44 29-58 44-9-12-9-52-8-60l-8 4a175 175 0 0 0-24 21 210 210 0 0 0-22 26 203 203 0 0 0-32 73l-1 2-2 15a279 279 0 0 0-4 34v1a240 240 0 0 0 477 40l1-9c5-41 0-84-15-121zm-24 13z' fill='url(%23ff-l)'/%3E%3C/svg%3E)
- ![Safari: 15.4.](data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink' width='24' height='24' viewBox='195 190 135 135'%3E%3Cdefs%3E%3ClinearGradient id='s-a' x1='132.6' x2='134.4' y1='111.7' y2='-105.3' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-color='%23d2d2d2' /%3E%3Cstop offset='.5' stop-color='%23f2f2f2' /%3E%3Cstop offset='1' stop-color='%23fff' /%3E%3C/linearGradient%3E%3ClinearGradient id='s-b' gradientUnits='userSpaceOnUse' /%3E%3ClinearGradient id='s-c' x1='65.4' x2='67.4' y1='115.7' y2='17.1' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-color='%23005ad5' /%3E%3Cstop offset='.2' stop-color='%230875f0' /%3E%3Cstop offset='.3' stop-color='%23218cee' /%3E%3Cstop offset='.6' stop-color='%2327a5f3' /%3E%3Cstop offset='.8' stop-color='%2325aaf2' /%3E%3Cstop offset='1' stop-color='%2321aaef' /%3E%3C/linearGradient%3E%3ClinearGradient id='s-d' x1='158.7' x2='176.3' y1='96.7' y2='79.5' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-color='%23c72e24' /%3E%3Cstop offset='1' stop-color='%23fd3b2f' /%3E%3C/linearGradient%3E%3CradialGradient id='s-i' cx='-69.9' cy='69.3' r='54' gradientTransform='matrix(.9 -.01 .04 2.72 -9 -120)' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-color='%2324a5f3' stop-opacity='0' /%3E%3Cstop offset='1' stop-color='%231e8ceb' /%3E%3C/radialGradient%3E%3CradialGradient id='s-j' cx='109.3' cy='13.8' r='93.1' gradientTransform='matrix(-.02 1.1 -1.04 -.02 137 -115)' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-opacity='0' /%3E%3Cstop offset='1' stop-color='%235488d6' stop-opacity='0' /%3E%3Cstop offset='1' stop-color='%235d96eb' /%3E%3C/radialGradient%3E%3C/defs%3E%3Crect width='220' height='220' x='22' y='-107' fill='url(%23s-a)' ry='49' transform='matrix(.57 0 0 .57 187 256)' /%3E%3Cg transform='translate(194 190)'%3E%3Ccircle cx='67.8' cy='67.7' fill='url(%23s-c)' paint-order='stroke fill markers' r='54' /%3E%3Ccircle cx='-69.9' cy='69.3' fill='url(%23s-i)' transform='translate(138 -2)' r='54' /%3E%3C/g%3E%3Cellipse cx='120' cy='14.2' fill='url(%23s-j)' rx='93.1' ry='93.7' transform='matrix(.58 0 0 .58 192 250)' /%3E%3Cg transform='matrix(.58 0 0 .57 197 182)'%3E%3Cpath fill='%23cac7c8' d='M46 192h1l72-48-7-9-66 57Z' /%3E%3Cpath fill='%23fbfffc' d='M46 191v1l66-57-7-9-59 65Z' /%3E%3Cpath fill='url(%23s-d)' d='m119 144-7-9 66-57-59 66Z' /%3E%3Cpath fill='%23fb645c' d='m105 126 7 9 66-57-1-1-72 49Z' /%3E%3C/g%3E%3Cpath stroke='%23fff' stroke-linecap='round' stroke-miterlimit='1' stroke-width='1.3' d='m287 278 3-2m-12-17 8-2m-8-3h4m-4-13 8 2m-8 3h4m-1-13 7 3m-4-11 7 4m-2-11 6 6m0-12 6 7m1-11 4 6m4-10 3 7m5-9 2 7m15-7-1 7m10-5-3 7m11-4-4 7m11-2-5 6m16 7-7 4m10 4-7 3m10 6-8 1m8 16-8-2m5 10-7-3m4 11-7-4m2 11-6-5m0 11-5-6m-2 11-4-7m-4 11-3-8m-6 10-1-8m-16 8 2-8m-10 5 3-7m-11 4 4-7m-11 2 5-6m-8 3 3-3m4 8 2-3m5 8 2-4m6 7 1-4m8 5v-4m8 4v-4m9 3-1-4m9 1-2-4m9 0-2-4m9-2-3-3m8-4-3-2m8-5-4-2m7-6-4-1m5-8h-4m4-8h-4m3-9-4 1m1-9-4 2m-1-9-3 2m-2-9-3 3m-4-8-2 3m-5-8-2 4m-6-6-1 3m-8-5v4m-8-4v4m-9-2 1 3m-9 0 2 3m-9 1 2 3m-9 2 3 3m-8 4 3 2m-8 5 4 2m-7 6 4 1m-4 25 4-1m-2 5 7-3m-6 7 4-2m-2 6 7-4m-13-21h8m41-41v-8m0 99v-8m49-42h-8' transform='translate(-65 8)' /%3E%3C/svg%3E)

[Source](https://developer.mozilla.org/docs/Web/CSS/Reference/At-rules/@layer)

<br />

Another developer pain point we've identified is ensuring consistency in which styles win over others, and one part of resolving this is having better control over the CSS cascade.

[Cascade layers](https://developer.chrome.com/blog/cascade-layers.md.txt) solve this by giving users control over which layers have a higher precedence than others, meaning more fine-tuned control of when your styles are applied.

![Cascade Illustration](https://developer.chrome.com/static/blog/whats-new-css-ui-2023/image/cascade-illustration-bb35806c83bb6.png)
![Screenshot from Codepen Project](https://developer.chrome.com/static/blog/whats-new-css-ui-2023/image/screenshot-codepen-proje-cbc0d46703a16.png) Explore the [project on Codepen.](https://codepen.io/web-dot-dev/project/editor/ZGQLkq)

Learn more about how to use cascade layers [in this article](https://developer.chrome.com/blog/cascade-layers.md.txt).

### Scoped CSS


Browser Support

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- ![Firefox: 146.](data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 512 512'%3E%3Cdefs%3E%3CradialGradient id='ff-b' cx='428.5' cy='55.1' r='501' gradientUnits='userSpaceOnUse'%3E%3Cstop offset='.1' stop-color='%23ffbd4f'/%3E%3Cstop offset='.2' stop-color='%23ffac31'/%3E%3Cstop offset='.3' stop-color='%23ff9d17'/%3E%3Cstop offset='.3' stop-color='%23ff980e'/%3E%3Cstop offset='.4' stop-color='%23ff563b'/%3E%3Cstop offset='.5' stop-color='%23ff3750'/%3E%3Cstop offset='.7' stop-color='%23f5156c'/%3E%3Cstop offset='.8' stop-color='%23eb0878'/%3E%3Cstop offset='.9' stop-color='%23e50080'/%3E%3C/radialGradient%3E%3CradialGradient id='ff-c' cx='245.4' cy='259.9' r='501' gradientUnits='userSpaceOnUse'%3E%3Cstop offset='.3' stop-color='%23960e18'/%3E%3Cstop offset='.3' stop-color='%23b11927' stop-opacity='.7'/%3E%3Cstop offset='.4' stop-color='%23db293d' stop-opacity='.3'/%3E%3Cstop offset='.5' stop-color='%23f5334b' stop-opacity='.1'/%3E%3Cstop 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- ![Safari: 26.4.](data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink' width='24' height='24' viewBox='195 190 135 135'%3E%3Cdefs%3E%3ClinearGradient id='s-a' x1='132.6' x2='134.4' y1='111.7' y2='-105.3' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-color='%23d2d2d2' /%3E%3Cstop offset='.5' stop-color='%23f2f2f2' /%3E%3Cstop offset='1' stop-color='%23fff' /%3E%3C/linearGradient%3E%3ClinearGradient id='s-b' gradientUnits='userSpaceOnUse' /%3E%3ClinearGradient id='s-c' x1='65.4' x2='67.4' y1='115.7' y2='17.1' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-color='%23005ad5' /%3E%3Cstop offset='.2' stop-color='%230875f0' /%3E%3Cstop offset='.3' stop-color='%23218cee' /%3E%3Cstop offset='.6' stop-color='%2327a5f3' /%3E%3Cstop offset='.8' stop-color='%2325aaf2' /%3E%3Cstop offset='1' stop-color='%2321aaef' /%3E%3C/linearGradient%3E%3ClinearGradient id='s-d' x1='158.7' x2='176.3' y1='96.7' y2='79.5' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-color='%23c72e24' /%3E%3Cstop offset='1' stop-color='%23fd3b2f' /%3E%3C/linearGradient%3E%3CradialGradient id='s-i' cx='-69.9' cy='69.3' r='54' gradientTransform='matrix(.9 -.01 .04 2.72 -9 -120)' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-color='%2324a5f3' stop-opacity='0' /%3E%3Cstop offset='1' stop-color='%231e8ceb' /%3E%3C/radialGradient%3E%3CradialGradient id='s-j' cx='109.3' cy='13.8' r='93.1' gradientTransform='matrix(-.02 1.1 -1.04 -.02 137 -115)' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-opacity='0' /%3E%3Cstop offset='1' stop-color='%235488d6' stop-opacity='0' /%3E%3Cstop offset='1' stop-color='%235d96eb' /%3E%3C/radialGradient%3E%3C/defs%3E%3Crect width='220' height='220' x='22' y='-107' fill='url(%23s-a)' ry='49' transform='matrix(.57 0 0 .57 187 256)' /%3E%3Cg transform='translate(194 190)'%3E%3Ccircle cx='67.8' cy='67.7' fill='url(%23s-c)' paint-order='stroke fill markers' r='54' /%3E%3Ccircle cx='-69.9' cy='69.3' fill='url(%23s-i)' transform='translate(138 -2)' r='54' /%3E%3C/g%3E%3Cellipse cx='120' cy='14.2' fill='url(%23s-j)' rx='93.1' ry='93.7' transform='matrix(.58 0 0 .58 192 250)' /%3E%3Cg transform='matrix(.58 0 0 .57 197 182)'%3E%3Cpath fill='%23cac7c8' d='M46 192h1l72-48-7-9-66 57Z' /%3E%3Cpath fill='%23fbfffc' d='M46 191v1l66-57-7-9-59 65Z' /%3E%3Cpath fill='url(%23s-d)' d='m119 144-7-9 66-57-59 66Z' /%3E%3Cpath fill='%23fb645c' d='m105 126 7 9 66-57-1-1-72 49Z' /%3E%3C/g%3E%3Cpath stroke='%23fff' stroke-linecap='round' stroke-miterlimit='1' stroke-width='1.3' d='m287 278 3-2m-12-17 8-2m-8-3h4m-4-13 8 2m-8 3h4m-1-13 7 3m-4-11 7 4m-2-11 6 6m0-12 6 7m1-11 4 6m4-10 3 7m5-9 2 7m15-7-1 7m10-5-3 7m11-4-4 7m11-2-5 6m16 7-7 4m10 4-7 3m10 6-8 1m8 16-8-2m5 10-7-3m4 11-7-4m2 11-6-5m0 11-5-6m-2 11-4-7m-4 11-3-8m-6 10-1-8m-16 8 2-8m-10 5 3-7m-11 4 4-7m-11 2 5-6m-8 3 3-3m4 8 2-3m5 8 2-4m6 7 1-4m8 5v-4m8 4v-4m9 3-1-4m9 1-2-4m9 0-2-4m9-2-3-3m8-4-3-2m8-5-4-2m7-6-4-1m5-8h-4m4-8h-4m3-9-4 1m1-9-4 2m-1-9-3 2m-2-9-3 3m-4-8-2 3m-5-8-2 4m-6-6-1 3m-8-5v4m-8-4v4m-9-2 1 3m-9 0 2 3m-9 1 2 3m-9 2 3 3m-8 4 3 2m-8 5 4 2m-7 6 4 1m-4 25 4-1m-2 5 7-3m-6 7 4-2m-2 6 7-4m-13-21h8m41-41v-8m0 99v-8m49-42h-8' transform='translate(-65 8)' /%3E%3C/svg%3E)

[Source](https://developer.mozilla.org/docs/Web/CSS/Reference/At-rules/@scope)

<br />

CSS scoped styles allow developers to specify the boundaries for which specific styles apply, essentially creating native namespacing in CSS. Before, developers relied on 3rd party scripting to rename classes, or specific naming conventions to prevent style collision, but soon, you can use `@scope`.

Here, we're scoping a `.title` element to a `.card`. This would prevent that title element from conflicting with any other `.title` elements on the page, like a blog post title or other heading.

```css
@scope (.card) {
  .title {
    font-weight: bold;
  }
}
```

You can see `@scope` with scoping limits together with `@layer` in this live demo:
<iframe allow="camera; clipboard-read; clipboard-write; encrypted-media; geolocation; microphone; midi;" loading="lazy" src="https://codepen.io/web-dot-dev/embed/MWPVGPL?height=600&amp;theme-id=light&amp;default-tab=result&amp;editable=true" style="height: 100%; width: 100%; border: 0;" title="Pen MWPVGPL by web-dot-dev on Codepen">See the Pen <a href="https://codepen.io/web-dot-dev/embed/MWPVGPL">Pen MWPVGPL by web-dot-dev on Codepen</a></iframe>

![Screenshot of the card from the demo](https://developer.chrome.com/static/blog/whats-new-css-ui-2023/image/screenshot-the-card-the-d6df3ec08f937.png)

Learn more about `@scope` in the [css-cascade-6 specification](https://www.w3.org/TR/css-cascade-6/#scoped-styles).

### Trigonometric functions


Browser Support

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[Source](https://developer.mozilla.org/docs/Web/CSS/Reference/Values/sin)

<br />

Another piece of new CSS plumbing are the trigonometric functions being added to the existing CSS math functions. These functions are now stable in all modern browsers, and enable you to create more organic layouts on the web platform. One great example is this radial menu layout, which is now possible to design and animate using `sin()` and `cos()` functions.

In the demo below, the dots revolve around a central point. Instead of rotating each dot around its own center and then moving it outwards, each dot is translated on the X and Y axes. The distances on the X and Y axes are determined by taking the `cos()` and, respectively, the `sin()` of the `--angle` into account.
<iframe allow="camera; clipboard-read; clipboard-write; encrypted-media; geolocation; microphone; midi;" loading="lazy" src="https://codepen.io/web-dot-dev/embed/ExePgOg?height=600&amp;theme-id=dark&amp;default-tab=result&amp;editable=true" style="height: 100%; width: 100%; border: 0;" title="Pen ExePgOg by web-dot-dev on Codepen">See the Pen <a href="https://codepen.io/web-dot-dev/embed/ExePgOg">Pen ExePgOg by web-dot-dev on Codepen</a></iframe>

See our [article on trigonometric functions](https://web.dev/articles/css-trig-functions) for more detailed information on this topic.

### Individual transform properties


Browser Support

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[Source](https://developer.mozilla.org/docs/Web/CSS/Reference/Properties/translate)

<br />

Developer ergonomics continue to improve with individual transform functions. Since the last time we held I/O, individual transforms went stable across all modern browsers.

In the past, you would rely on the transform function to apply sub-functions to scale, rotate, and translate a UI element. This involved a lot of repetition, and was especially frustrating when applying multiple transforms at different times in the animation.

```css
.target {
  transform: translateX(50%) rotate(30deg) scale(1.2);
}

.target:hover {
  transform: translateX(50%) rotate(30deg) scale(2); /* Only scale changed here, yet you have to repeat all other parts */
}
```

Now, you can have all of this detail in your CSS animations by separating the types of transforms and applying them individually.

```css
.target {
  translate: 50% 0;
  rotate: 30deg;
  scale: 1.2;
}

.target:hover {
  scale: 2;
}
```

With this, changes in translation, rotation, or scale can happen simultaneously at different rates of change in different times during the animation.

See this [post on individual transform functions](https://web.dev/articles/css-individual-transform-properties) for more information.

## Customizable Components

To make sure we're resolving some of the key developer needs through the web platform, we're working with the [OpenUI community group](http://open-ui.com/) and have identified three solutions to start with:

1. Built-in popup functionality with event handlers, a declarative DOM structure, and accessible defaults.
2. A CSS API to tether two elements to each other to enable anchor positioning.
3. A customizable dropdown menu component, for when you want to style content inside of a select.

### Popover

The [popover API](https://developer.mozilla.org/docs/Web/HTML/Global_attributes/popover) gives elements some built-in browser-support magic such as:

- Support for top-layer, so you don't have to manage `z-index`. When you open a popover or a dialog, you're promoting that element to a special layer on top of the page.
- Light-dismiss behavior for free in `auto` popovers, so when you click outside of an element, the popover is dismissed, removed from the accessibility tree, and focus properly managed.
- Default accessibility for the connective tissue of the popover's target and the popover itself.

All of this means less JavaScript has to be written to create all of this functionality and track all of these states.

![Example of a popover](https://developer.chrome.com/static/blog/whats-new-css-ui-2023/image/example-a-popover-2491fd0f6114e.png)

The DOM structure for popover is declarative and can be written as clearly as giving your popover element an `id` and the `popover` attribute. Then, you sync that id to the element which would open the popover, such as a button with the `popovertarget` attribute:

```html
<div id="event-popup" popover>
  <!-- Popover content goes in here --->
</div>

<button popovertarget="event-popup">Create New Event</button>
```

`popover` is a shorthand for `popover=auto`. An element with `popover=auto` will force-close other popovers when opened, receive focus when opened, and can light-dismiss. Conversely, `popover=manual` elements do not force-close any other element type, do not receive focus immediately, and do not light-dismiss. They close via a toggle or other close action.
<iframe allow="camera; clipboard-read; clipboard-write; encrypted-media; geolocation; microphone; midi;" loading="lazy" src="https://codepen.io/web-dot-dev/embed/mdzpGwq?height=400&amp;theme-id=light&amp;default-tab=result&amp;editable=true" style="height: 100%; width: 100%; border: 0;" title="Pen mdzpGwq by web-dot-dev on Codepen">See the Pen <a href="https://codepen.io/web-dot-dev/embed/mdzpGwq">Pen mdzpGwq by web-dot-dev on Codepen</a></iframe>

The most up-to-date documentation on popovers can currently be found [on MDN](https://developer.mozilla.org/docs/Web/HTML/Global_attributes/popover).

### Anchor positioning

Popovers are also frequently used in elements such as dialogs and tooltips, which typically need to be anchored to specific elements. Take this event example. When you click on a calendar event, a dialog appears near the event you've clicked on. The calendar item is the anchor, and the popover is the dialog which shows the event details.

You can create a centered tooltip with the `anchor()` function, using the width from the anchor to position the tooltip at 50% of the anchor's x position. Then, use existing positioning values to apply the rest of the placement styles.

But what happens if the popover doesn't fit in the viewport based on the way you've positioned it?

![popover popping out of viewport](https://developer.chrome.com/static/blog/whats-new-css-ui-2023/image/popover-popping-of-viewp-b25124fbdaead.png)

To solve for this, the anchor positioning API includes fallback positions that you can customize. The following example creates a fallback position called "top-then-bottom". The browser will first try to position the tooltip at the top, and if that doesn't fit in the viewport, the browser would then position it under the anchoring element, on the bottom.

```css
.center-tooltip {
  position-fallback: --top-then-bottom;
  translate: -50% 0;
}

@position-fallback --top-then-bottom {
  @try {
    bottom: calc(anchor(top) + 0.5rem);
    left: anchor(center);
  }

  @try {
    top: calc(anchor(bottom) + 0.5rem);
    left: anchor(center);
  }
}
```
<iframe allow="camera; clipboard-read; clipboard-write; encrypted-media; geolocation; microphone; midi;" loading="lazy" src="https://codepen.io/web-dot-dev/embed/PoyRaZe?height=400&amp;theme-id=light&amp;default-tab=result&amp;editable=true" style="height: 100%; width: 100%; border: 0;" title="Pen PoyRaZe by web-dot-dev on Codepen">See the Pen <a href="https://codepen.io/web-dot-dev/embed/PoyRaZe">Pen PoyRaZe by web-dot-dev on Codepen</a></iframe>

> [!NOTE]
> **Note:** You can get really granular here, which may get verbose, but it's also an opportunity for libraries and design systems to write the positioning logic and for you to reuse it everywhere.

Learn more about anchor positioning [in this blog post](https://developer.chrome.com/blog/tether-elements-to-each-other-with-css-anchor-positioning.md.txt).

### `<selectmenu>`

With both popover and anchor positioning, you can build fully customizable selectmenus. The OpenUI community group has been investigating the fundamental structure of these menus and looking for ways to allow for the customization of any content within them. Take these visual examples:

![Examples of selectmenus](https://developer.chrome.com/static/blog/whats-new-css-ui-2023/image/examples-selectmenus-55233df165b45.png)

To build that left-most `selectmenu` example, with colored dots corresponding to the color that would show within a calendar event, you can write it as follows:

```html
<selectmenu>
  <button slot="button" behavior="button">
    <span>Select event type</span>
    <span behavior="selected-value" slot="selected-value"></span>
    <span><img src="icon.svg"/></span>
  </button>
  <option value="meeting">
    <figure class="royalblue"></figure>
    <p>Meeting</p>
  </option>
  <option value="break">
    <figure class="gold"></figure>
     <p>Lunch/Break</p>
  </option>
  ...
</selectmenu>
```
<iframe allow="camera; clipboard-read; clipboard-write; encrypted-media; geolocation; microphone; midi;" loading="lazy" src="https://codepen.io/web-dot-dev/embed/xxyWzJr?height=500&amp;theme-id=light&amp;default-tab=result&amp;editable=true" style="height: 100%; width: 100%; border: 0;" title="Pen xxyWzJr by web-dot-dev on Codepen">See the Pen <a href="https://codepen.io/web-dot-dev/embed/xxyWzJr">Pen xxyWzJr by web-dot-dev on Codepen</a></iframe>

### Discrete property transitions

In order for all of this to transition popovers in and out smoothly, the web needs some way to animate discrete properties. These are properties that typically weren't animatable in the past, such animating to and from the top-layer and animating to and from `display: none`.

As a part of the work to enable nice transitions for popovers, selectmenus, and even existing elements like dialogs or custom components, browsers are enabling new plumbing to support these animations.

The following popover demo, animates popovers in and out using `:popover-open` for the open state, `@starting-style` for the before-open state, and applies a transform value to the element directly for the after-open-is-closed state. To make this all work with display, it needs adding to the `transition` property, like so:

```css
.settings-popover {
  &:popover-open {
    /*   0. before-change   */
    @starting-style {
      transform: translateY(20px);
      opacity: 0;
    }

    /*   1. open (changed) state   */
    transform: translateY(0);
    opacity: 1;
  }

  /*   2. After-change state */
  transform: translateY(-50px);
  opacity: 0;

  /*  enumarate transitioning properties, including display */
  transition: transform 0.5s, opacity 0.5s, display 0.5s allow-discrete;
}
```
<iframe allow="camera; clipboard-read; clipboard-write; encrypted-media; geolocation; microphone; midi;" loading="lazy" src="https://codepen.io/web-dot-dev/embed/gOBGLBw?height=500&amp;theme-id=light&amp;default-tab=result&amp;editable=true" style="height: 100%; width: 100%; border: 0;" title="Pen gOBGLBw by web-dot-dev on Codepen">See the Pen <a href="https://codepen.io/web-dot-dev/embed/gOBGLBw">Pen gOBGLBw by web-dot-dev on Codepen</a></iframe>

## Interactions

Which brings us to interactions, the last stop on this tour of web UI features.

We already talked about animating discrete properties, but there are also some really exciting APIs landing in Chrome around scroll-driven animations and view transitions

### Scroll-driven animations


Browser Support

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0-1 1 1 0 0 0-1 0c-9 5-65 92 10 167z' fill='url(%23ff-i)'/%3E%3Cpath d='M367 199a46 46 0 0 0-4-3l-1-1c-13-9-36-18-58-15 86 44 63 193-57 187a107 107 0 0 1-31-6 131 131 0 0 1-11-5c17 12 99 39 186-31 2-5 31-76-24-126z' fill='url(%23ff-j)'/%3E%3Cpath d='M148 277s12-41 80-41c7 0 28-20 29-26s-44 18-90-4c-51-24-89 4-89 4s15 35 57 35c-4 40 16 85 67 110l3 1c-29-15-54-44-57-79z' fill='url(%23ff-k)'/%3E%3Cpath d='M479 166c-11-25-32-52-49-60a249 249 0 0 1 25 73c-27-68-73-95-111-155a255 255 0 0 1-8-14 44 44 0 0 1-4-9 1 1 0 0 0 0-1 1 1 0 0 0-1 0c-60 35-81 101-83 134l9-1c45 0 84 25 105 62-13-9-36-18-58-14 86 43 63 192-57 186a107 107 0 0 1-31-6 131 131 0 0 1-11-5l-3-1 3 1c-29-15-54-44-57-79 0 0 12-41 80-41 7 0 28-20 29-26 0-2-42-19-58-35l-17-16a71 71 0 0 0-6-5 111 111 0 0 1-1-58c-25 11-44 29-58 44-9-12-9-52-8-60l-8 4a175 175 0 0 0-24 21 210 210 0 0 0-22 26 203 203 0 0 0-32 73l-1 2-2 15a279 279 0 0 0-4 34v1a240 240 0 0 0 477 40l1-9c5-41 0-84-15-121zm-24 13z' fill='url(%23ff-l)'/%3E%3C/svg%3E)
- ![Safari: 26.](data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink' width='24' height='24' viewBox='195 190 135 135'%3E%3Cdefs%3E%3ClinearGradient id='s-a' x1='132.6' x2='134.4' y1='111.7' y2='-105.3' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-color='%23d2d2d2' /%3E%3Cstop offset='.5' stop-color='%23f2f2f2' /%3E%3Cstop offset='1' stop-color='%23fff' /%3E%3C/linearGradient%3E%3ClinearGradient id='s-b' gradientUnits='userSpaceOnUse' /%3E%3ClinearGradient id='s-c' x1='65.4' x2='67.4' y1='115.7' y2='17.1' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-color='%23005ad5' /%3E%3Cstop offset='.2' stop-color='%230875f0' /%3E%3Cstop offset='.3' stop-color='%23218cee' /%3E%3Cstop offset='.6' stop-color='%2327a5f3' /%3E%3Cstop offset='.8' stop-color='%2325aaf2' /%3E%3Cstop offset='1' stop-color='%2321aaef' /%3E%3C/linearGradient%3E%3ClinearGradient id='s-d' x1='158.7' x2='176.3' y1='96.7' y2='79.5' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-color='%23c72e24' /%3E%3Cstop offset='1' stop-color='%23fd3b2f' /%3E%3C/linearGradient%3E%3CradialGradient id='s-i' cx='-69.9' cy='69.3' r='54' gradientTransform='matrix(.9 -.01 .04 2.72 -9 -120)' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-color='%2324a5f3' stop-opacity='0' /%3E%3Cstop offset='1' stop-color='%231e8ceb' /%3E%3C/radialGradient%3E%3CradialGradient id='s-j' cx='109.3' cy='13.8' r='93.1' gradientTransform='matrix(-.02 1.1 -1.04 -.02 137 -115)' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-opacity='0' /%3E%3Cstop offset='1' stop-color='%235488d6' stop-opacity='0' /%3E%3Cstop offset='1' stop-color='%235d96eb' /%3E%3C/radialGradient%3E%3C/defs%3E%3Crect width='220' height='220' x='22' y='-107' fill='url(%23s-a)' ry='49' transform='matrix(.57 0 0 .57 187 256)' /%3E%3Cg transform='translate(194 190)'%3E%3Ccircle cx='67.8' cy='67.7' fill='url(%23s-c)' paint-order='stroke fill markers' r='54' /%3E%3Ccircle cx='-69.9' cy='69.3' fill='url(%23s-i)' transform='translate(138 -2)' r='54' /%3E%3C/g%3E%3Cellipse cx='120' cy='14.2' fill='url(%23s-j)' rx='93.1' ry='93.7' transform='matrix(.58 0 0 .58 192 250)' /%3E%3Cg transform='matrix(.58 0 0 .57 197 182)'%3E%3Cpath fill='%23cac7c8' d='M46 192h1l72-48-7-9-66 57Z' /%3E%3Cpath fill='%23fbfffc' d='M46 191v1l66-57-7-9-59 65Z' /%3E%3Cpath fill='url(%23s-d)' d='m119 144-7-9 66-57-59 66Z' /%3E%3Cpath fill='%23fb645c' d='m105 126 7 9 66-57-1-1-72 49Z' /%3E%3C/g%3E%3Cpath stroke='%23fff' stroke-linecap='round' stroke-miterlimit='1' stroke-width='1.3' d='m287 278 3-2m-12-17 8-2m-8-3h4m-4-13 8 2m-8 3h4m-1-13 7 3m-4-11 7 4m-2-11 6 6m0-12 6 7m1-11 4 6m4-10 3 7m5-9 2 7m15-7-1 7m10-5-3 7m11-4-4 7m11-2-5 6m16 7-7 4m10 4-7 3m10 6-8 1m8 16-8-2m5 10-7-3m4 11-7-4m2 11-6-5m0 11-5-6m-2 11-4-7m-4 11-3-8m-6 10-1-8m-16 8 2-8m-10 5 3-7m-11 4 4-7m-11 2 5-6m-8 3 3-3m4 8 2-3m5 8 2-4m6 7 1-4m8 5v-4m8 4v-4m9 3-1-4m9 1-2-4m9 0-2-4m9-2-3-3m8-4-3-2m8-5-4-2m7-6-4-1m5-8h-4m4-8h-4m3-9-4 1m1-9-4 2m-1-9-3 2m-2-9-3 3m-4-8-2 3m-5-8-2 4m-6-6-1 3m-8-5v4m-8-4v4m-9-2 1 3m-9 0 2 3m-9 1 2 3m-9 2 3 3m-8 4 3 2m-8 5 4 2m-7 6 4 1m-4 25 4-1m-2 5 7-3m-6 7 4-2m-2 6 7-4m-13-21h8m41-41v-8m0 99v-8m49-42h-8' transform='translate(-65 8)' /%3E%3C/svg%3E)

[Source](https://developer.mozilla.org/docs/Web/CSS/Reference/Properties/animation-timeline)

<br />

Scroll-driven animations allow you to control the playback of an animation based on the scroll position of a scroll container. This means that as you scroll up or down, the animation scrubs forward or backward. Additionally, with scroll-driven animations you can also control an animation based on an element's position within its scroll container. This allows you to create interesting effects such as a parallax background image, scroll progress bars, and images that reveal themselves as they come into view.

This API supports a set of JavaScript classes and CSS properties that allow you to easily create declarative scroll-driven animations.

To drive a CSS Animation by scroll use the new `scroll-timeline`, `view-timeline`, and `animation-timeline` properties.
To drive a JavaScript Web Animations API, pass a `ScrollTimeline` or `ViewTimeline` instance as the `timeline` option to `Element.animate()`

These new APIs work in conjunction with existing Web Animations and CSS Animations APIs, meaning that they benefit from the advantages of these APIs. That includes the ability to have these animations run off the main thread. Yes, read that correctly: you can now have silky smooth animations, driven by scroll, running off the main thread, with just a few lines of extra code. What's not to like?!
<iframe src="https://scroll-driven-animations.style/demos/cover-flow/css/?embed" frameborder="0" sandbox="allow-scripts allow-forms" width="500" height="600" style="height: 600px; width: 100%; border: 1px solid #333;"></iframe>

For an extensive in-depth guide to how to create these scroll-driven animations, please refer to [this article on scroll-driven animations](https://developer.chrome.com/docs/css-ui/scroll-driven-animations.md.txt).

### View transitions


Browser Support

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- ![Firefox: 144.](data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 512 512'%3E%3Cdefs%3E%3CradialGradient id='ff-b' cx='428.5' cy='55.1' r='501' gradientUnits='userSpaceOnUse'%3E%3Cstop offset='.1' stop-color='%23ffbd4f'/%3E%3Cstop offset='.2' stop-color='%23ffac31'/%3E%3Cstop offset='.3' stop-color='%23ff9d17'/%3E%3Cstop offset='.3' stop-color='%23ff980e'/%3E%3Cstop offset='.4' stop-color='%23ff563b'/%3E%3Cstop offset='.5' stop-color='%23ff3750'/%3E%3Cstop offset='.7' stop-color='%23f5156c'/%3E%3Cstop offset='.8' stop-color='%23eb0878'/%3E%3Cstop offset='.9' stop-color='%23e50080'/%3E%3C/radialGradient%3E%3CradialGradient id='ff-c' cx='245.4' cy='259.9' r='501' gradientUnits='userSpaceOnUse'%3E%3Cstop offset='.3' stop-color='%23960e18'/%3E%3Cstop offset='.3' stop-color='%23b11927' stop-opacity='.7'/%3E%3Cstop offset='.4' stop-color='%23db293d' stop-opacity='.3'/%3E%3Cstop offset='.5' stop-color='%23f5334b' stop-opacity='.1'/%3E%3Cstop 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- ![Safari: 18.](data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink' width='24' height='24' viewBox='195 190 135 135'%3E%3Cdefs%3E%3ClinearGradient id='s-a' x1='132.6' x2='134.4' y1='111.7' y2='-105.3' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-color='%23d2d2d2' /%3E%3Cstop offset='.5' stop-color='%23f2f2f2' /%3E%3Cstop offset='1' stop-color='%23fff' /%3E%3C/linearGradient%3E%3ClinearGradient id='s-b' gradientUnits='userSpaceOnUse' /%3E%3ClinearGradient id='s-c' x1='65.4' x2='67.4' y1='115.7' y2='17.1' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-color='%23005ad5' /%3E%3Cstop offset='.2' stop-color='%230875f0' /%3E%3Cstop offset='.3' stop-color='%23218cee' /%3E%3Cstop offset='.6' stop-color='%2327a5f3' /%3E%3Cstop offset='.8' stop-color='%2325aaf2' /%3E%3Cstop offset='1' stop-color='%2321aaef' /%3E%3C/linearGradient%3E%3ClinearGradient id='s-d' x1='158.7' x2='176.3' y1='96.7' y2='79.5' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-color='%23c72e24' /%3E%3Cstop offset='1' stop-color='%23fd3b2f' /%3E%3C/linearGradient%3E%3CradialGradient id='s-i' cx='-69.9' cy='69.3' r='54' gradientTransform='matrix(.9 -.01 .04 2.72 -9 -120)' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-color='%2324a5f3' stop-opacity='0' /%3E%3Cstop offset='1' stop-color='%231e8ceb' /%3E%3C/radialGradient%3E%3CradialGradient id='s-j' cx='109.3' cy='13.8' r='93.1' gradientTransform='matrix(-.02 1.1 -1.04 -.02 137 -115)' xlink:href='%23s-b'%3E%3Cstop offset='0' stop-opacity='0' /%3E%3Cstop offset='1' stop-color='%235488d6' stop-opacity='0' /%3E%3Cstop offset='1' stop-color='%235d96eb' /%3E%3C/radialGradient%3E%3C/defs%3E%3Crect width='220' height='220' x='22' y='-107' fill='url(%23s-a)' ry='49' transform='matrix(.57 0 0 .57 187 256)' /%3E%3Cg transform='translate(194 190)'%3E%3Ccircle cx='67.8' cy='67.7' fill='url(%23s-c)' paint-order='stroke fill markers' r='54' /%3E%3Ccircle cx='-69.9' cy='69.3' fill='url(%23s-i)' transform='translate(138 -2)' r='54' /%3E%3C/g%3E%3Cellipse cx='120' cy='14.2' fill='url(%23s-j)' rx='93.1' ry='93.7' transform='matrix(.58 0 0 .58 192 250)' /%3E%3Cg transform='matrix(.58 0 0 .57 197 182)'%3E%3Cpath fill='%23cac7c8' d='M46 192h1l72-48-7-9-66 57Z' /%3E%3Cpath fill='%23fbfffc' d='M46 191v1l66-57-7-9-59 65Z' /%3E%3Cpath fill='url(%23s-d)' d='m119 144-7-9 66-57-59 66Z' /%3E%3Cpath fill='%23fb645c' d='m105 126 7 9 66-57-1-1-72 49Z' /%3E%3C/g%3E%3Cpath stroke='%23fff' stroke-linecap='round' stroke-miterlimit='1' stroke-width='1.3' d='m287 278 3-2m-12-17 8-2m-8-3h4m-4-13 8 2m-8 3h4m-1-13 7 3m-4-11 7 4m-2-11 6 6m0-12 6 7m1-11 4 6m4-10 3 7m5-9 2 7m15-7-1 7m10-5-3 7m11-4-4 7m11-2-5 6m16 7-7 4m10 4-7 3m10 6-8 1m8 16-8-2m5 10-7-3m4 11-7-4m2 11-6-5m0 11-5-6m-2 11-4-7m-4 11-3-8m-6 10-1-8m-16 8 2-8m-10 5 3-7m-11 4 4-7m-11 2 5-6m-8 3 3-3m4 8 2-3m5 8 2-4m6 7 1-4m8 5v-4m8 4v-4m9 3-1-4m9 1-2-4m9 0-2-4m9-2-3-3m8-4-3-2m8-5-4-2m7-6-4-1m5-8h-4m4-8h-4m3-9-4 1m1-9-4 2m-1-9-3 2m-2-9-3 3m-4-8-2 3m-5-8-2 4m-6-6-1 3m-8-5v4m-8-4v4m-9-2 1 3m-9 0 2 3m-9 1 2 3m-9 2 3 3m-8 4 3 2m-8 5 4 2m-7 6 4 1m-4 25 4-1m-2 5 7-3m-6 7 4-2m-2 6 7-4m-13-21h8m41-41v-8m0 99v-8m49-42h-8' transform='translate(-65 8)' /%3E%3C/svg%3E)

[Source](https://developer.mozilla.org/docs/Web/CSS/Reference/Properties/view-transition-name)

<br />

The View Transition API makes it easy to change the DOM in a single step, while creating an animated transition between the two states. These can be simple fades between views, but you can also control how individual parts of the page should transition.

View Transitions can be used as a Progressive Enhancement: take your code that updates the DOM by whatever method and wrap it in the view transition API with a fallback for browsers that don't support the feature.

```javascript
function spaNavigate(data) {
  // Fallback for browsers that don't support this API:
  if (!document.startViewTransition) {
    updateTheDOMSomehow(data);
    return;
  }

  // With a transition:
  document.startViewTransition(() => updateTheDOMSomehow(data));
}
```

What the transition should look like is controlled via CSS

```css
@keyframes slide-from-right {
  from { opacity: 0; transform: translateX(75px); }
}

@keyframes slide-to-left {
  to { opacity: 0; transform: translateX(-75px); }
}

::view-transition-old(root) {
  animation: 350ms both slide-to-left ease;
}

::view-transition-new(root) {
  animation: 350ms both slide-from-right ease;
}
```

As demonstrated in [this wonderful demo](https://live-transitions.netlify.app/) by [Maxi Ferreira](https://twitter.com/charca), other page interactions, such as a playing video, keep working while a View Transition is happening.

View Transitions currently work with Single-Page Apps (SPAs) from Chrome 111. Multiple-page app support is being worked on. For more, check out our full [view transitions guide](https://developer.chrome.com/docs/web-platform/view-transitions.md.txt) to walk you through it all.

## Conclusion

Keep up with all the latest landings in CSS and HTML right here on [developer.chrome.com](https://developer.chrome.com/) and check out the [I/O videos](https://www.youtube.com/playlist?list=PLOU2XLYxmsIJGxIV8Lt8gF_79Z334LQ6h) for more web landings.

[Video](https://www.youtube.com/watch?v=buChHSdsF9A)

[Video](https://www.youtube.com/watch?v=oDcb3fvtETs)

[Video](https://www.youtube.com/watch?v=JiVQBqAkkac)