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The random() CSS function chooses a random numeric value within a specified range. This allows for dynamic, randomized styling using CSS.

Status

Limited availability

MDN documentation

random()

Specifications

CSS Values and Units Module Level 5 (#random), from Cascading Style Sheets (CSS) Working Group (W3C).

Browser support

Chrome ❌
Chrome Android ❌
Edge ❌
Firefox ❌
Firefox for Android ❌
Safari 26.2 Released on 2025-12-12
Safari on iOS 26.2 Released on 2025-12-12

Web Platform Tests (WPT)

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