CSS custom counter styles

Category: CSS
Type: Chromium catches up
Status: Enabled by default (Chrome 91)
Intent stage: Shipped

Summary

The CSS @counter-style rule allows web authors to specify and use custom counter styles in list markers and CSS counters. This helps web internationalization.

Motivation

This is a highly demanded CSS feature, especially by developers with needs in internationalization. The tracking bug (crbug.com/687225) has 40 stars, and already contains multiple detailed use cases of the feature.

Standards & signals

Specification: https://drafts.csswg.org/css-counter-styles-3
Firefox: Shipped/Shipping — Other than image symbols and 'speak-as: spell-out', Firefox has fully shipped the feature.
Safari: Positive
Web developers: No signals
Tracking bug: https://bugs.chromium.org/p/chromium/issues/detail?id=687225

Docs: https://bit.ly/2Gm1oMC

Explainers: https://developer.mozilla.org/en-US/docs/Web/CSS/@counter-style

View on chromestatus.com