Fully local code embeds
A web component for isolated code sandboxes without third-party embeds.
All news
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Introducing masonry-gridlanes-wc: a native-first masonry web component
A web component with native CSS masonry support and a JavaScript fallback.
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State of AI 2026
A new survey on how developers use AI tools and coding assistants.
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Modern CSS feature support for shadow DOM
Tracking CSS feature parity across the shadow DOM boundary.
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SVG filters guide: getting started with the basics
Filter primitives, regions, chaining, and color interpolation explained.
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Progressive web components
An HTML-and-CSS-first library for building web components that hydrate with JS.
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Inverted themes with light-dark()
Adaptive theme switching with CSS container style queries and a JS polyfill fallback.
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Under the hood of MDN’s new frontend
Web components, Lit, and server-side rendering replace the old React SPA.
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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.