named-feature() function for CSS @supports

[dbaron]

Specification

https://drafts.csswg.org/css-conditional-5/#typedef-supports-named-feature-fn

Description

A function for CSS @supports for detecting particular features specifically named by the CSS Working Group.

(I'd suggest the name supports-named-feature to align with the existing supports-at-rule.

Documentation

Explainer: https://github.com/w3c/csswg-drafts/blob/main/css-conditional-5/named-feature-explainer.md

Browser support

None yet.

Chromestatus: https://chromestatus.com/feature/5153932394102784