New in Chrome 143

Rachel Andrew

Published: December 2, 2025

Chrome 143 is rolling out now, and this post shares some of the key features from the release. Read the full Chrome 143 release notes.

Highlights from this release:

CSS anchored fallback container queries

Introduces @container anchored(fallback) to style descendants of anchor positioned elements based on which of position-try-fallbacks is applied.

Such queries can be used to style an anchored element's tether or its animations, based on how the anchor and the anchored element are positioned relative to each other.

Side-relative syntax for background-position-x/y longhands

Defines the background image's position relative to one of its edges in the longhand properties for background-position. For example:

.element {
  background-image: url(flower.gif);
  background-repeat: no-repeat;
  background-position-x: left 30px;
  background-position-y: bottom 20px;
}

This implementation makes the feature Baseline Newly available.

Implement the font-language-override CSS property

Introduces support for font-language-override CSS property. The property allows developers to override the system language used for OpenType glyph substitution by specifying a four-character language tag directly in CSS.

This enables fine-grained typographic control, particularly useful for multilingual content or fonts with language-specific glyph variants.

Further reading

This covers only some key highlights. Check the following links for additional changes in Chrome 143.

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