Firefox for Web Developers
webdevs.firefox.com
did:plc:6jsvyhtxrkb4d2wrlwd2avmm
CSS attr() now works on all properties in Firefox 155. Here's how it works, and how to get the most out of it:
2026-09-03T13:16:04.108Z
Enable JavaScript to use Bluesky.
Learn more about Bluesky at bsky.social and atproto.com.