
Firefox 151 release notes for developers
@container style() queries, Document Picture-in-Picture, desktop Web Serial, and keyboardLock.
Web Standards
Daily web platform news

@container style() queries, Document Picture-in-Picture, desktop Web Serial, and keyboardLock.

Annual developer survey shows AI-assisted coding has shifted from early-adopter to mainstream.

How Safari and Firefox quietly patch the web to keep big sites working.

Browser-native XSS-safe HTML insertion without DOMPurify or other libraries.

A look at the TC39 ShadowRealm proposal for isolating JavaScript in clean execution contexts.

The :open pseudo-class, element-scoped random(), Origin API, and 63 bug fixes.

Speed up, slow down, and reverse animations with animation-composition and CSS variables.

How Evil Martians replaced React and Ark UI with Web Components and a 2.5 KB wrapper library.

How to keep notches, cutouts, and home indicators from overlapping your UI.

Name-only container queries, at-rule() in @supports, lazy <video> and <audio>, Prompt API, and more.

How CSS comparison operators replace overlapping min-width and max-width breakpoints.

A practical guide to scalable token names across teams and products.