A bunch of demos and tools to show off Scroll-driven Animations

YouTube video by Firefox for Web Developers

YouTube video by Kevin Powell

Description When we looked into JPEG XL, I asked developers why they were interested in the format, and the most common answer was "progressive rendering". This is now working in Firefox and Chrome...

Learn how the HTML lang attribute improves screen reader pronunciation, supports multilingual accessibility, and enables language-aware testing across browsers

A tool to synchronize data from HomeWizard to EnergyID - Th3S4mur41/hw-hooks

Wiring HTML attributes into CSS with advanced typed attr(), and letting container style queries pass that state down to child components.

Description After recieving 82 👍 12 ❤️ and 9 🚀 emojis from last year's interop proposal (#1011), I'm once again asking for Reference Target to be considered for Interop 2027. It solves (and doesn't...

web-platform-tests Interop project. Contribute to web-platform-tests/interop development by creating an account on GitHub.

The Interop 2027 call for proposals is open, submit your ideas now! Over the past six years, the I

The foundational language of the web is getting plenty of love lately! While HTML moves a bit more slowly than its buddies, CSS and JavaScript, that tends to be a good thing. I’m not gonna do, like,…

What makes a video element accessible is captions, descriptions, and a transcript. When those are out of reach, what are the remaining options for giving a video element an accessible name?

In CSS you can feature detect support for things like selectors, properties + values, and at-rules using @supports. But how do you feature detect a change to an underlying implementation, or two exist...

The default might not be what you expect, and it has a big impact on your styles.

YouTube video by Kevin Powell

A CSS pseudo-class is a keyword added to a selector that lets you select elements based on information that lies outside of the document tree, such as a specific state of the selected element(s). For ...

Native CSS mixins in Chromium: practical examples, runtime differences vs Sass/Less, flag-based testing, DevTools gaps, and where the draft spec goes further.

One of the things that we at Chrome have been thinking about for a while now is a way to do declarative route and navigation matching in CSS. Together with Noam Rosenthal and David Baron I’ve been wor...

The European Central Bank (ECB) is the central bank of the European Union countries which have adopted the euro. Our main task is to maintain price stability in the euro area and so preserve the purch...

NEW (nobody) in Core - Disability Access APIs. Last updated 2026-07-16.

Quick accessibility wins that improve usability fast, from alt text to keyboard access, with practical fixes you can apply today.

Temani mimics a View Transition by placing items using their index and translations. The placement calculation change when the index changes, which is an animation opportunity!

An influential spec editor thinks polyfilling is harmful. I think blaming polyfills for compat accidents is like blaming car crashes on the ambulances that show up — and the alternative is a stagnant ...

Chrome and Edge 150 shipped native focusgroup support — an HTML attribute that brings arrow-key navigation to the browser, with automatic ARIA roles and a polyfill available today.

For decades, one of the most notoriously-challenging problems on the web has been sticking one element to another element, for things like tooltips and nested menus. The CSSWG has decided to provide a...

This post is a follow-up on my previous post. I was wondering whether it's safe to use Grid Lanes today. I came up with a solution I find okay, but there is a caveat.

The 'ideal' sizing is more complicated than you think…