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CSS random() polyfill aims to bring Safari-only feature to all browsers

CSS-Tricks 11 hours ago 17 min read ↗ Original

A developer is building a polyfill for the CSS random() function, which currently only works in Safari, to make it available across all browsers.

WHY IT MATTERS

For front-end engineers, CSS random() offers a declarative way to add controlled randomness to layouts, reducing reliance on JavaScript. A polyfill would make this feature usable across browsers, but the spec is still in early draft and subject to breaking changes, so adopting a polyfill carries maintenance risk.

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The three things worth knowing

Safari became the first browser to support the CSS random() spec in late 2025.

The CSS random() spec is an editor's draft in early exploration, with major breaking changes expected.

The author is building a css-random-polyfill package to make the feature work in all browsers.

THE CLUSTER

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CSS-Tricks Let’s Use the Emergent CSS random() Function in all the Browsers 11 hours Open ↗