Under the hood of MDN’s new frontend
Web components, Lit, and server-side rendering replace the old React SPA.
All news
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What’s new in Chrome 147
View transitions,
contrast-color(),border-shape,Math.sumPrecise, and more. -
Getting your article shared: tips from ten years of newsletter curation
Practical advice on OG tags, sharing images, titles, blurbs, and canonical URLs.
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What is CSS containment and how can I use it?
How contain values, shorthands, and content-visibility cut unnecessary browser work.
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The great CSS expansion
CSS features that replace hundreds of kilobytes of JavaScript libraries.
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Squarespace and web standards: how we helped bring HTML video and audio lazy loading to today’s browsers
How Squarespace engineers contributed lazy loading for video and audio to the web platform.
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Native JSON modules are finally real
Import attributes syntax now works in browsers and runtimes without bundlers.
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Form-associated custom elements in practice
Retrofitting AgnosticUI with ElementInternals and form validation.
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CSS is DOOMed: rendering DOOM in 3D with CSS
Every wall, floor, and enemy is a
<div>positioned in 3D space. -
The Layout Maestro, a practical CSS course on building web layouts
Learn to think about layout decisions through visual lessons and demos.
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Under the hood: a closer look at the CSS architecture behind the redesign
Cascade layers, design tokens,
light-dark(), and container queries in action. -
WebKit features for Safari 26.4
Grid lanes, WebTransport, Keyboard Lock API, and 191 bug fixes.