Web features explorer - abs() and sign()

Web features explorer

The abs() and sign() CSS functions compute the absolute value or the sign of the input.

Browser support

Chrome 138 Released on 2025-06-24
Chrome Android 138 Released on 2025-06-24
Edge 138 Released on 2025-06-26
Firefox 118 Released on 2023-09-26
Firefox for Android 118 Released on 2023-09-26
Safari 15.4 Released on 2022-03-14
Safari on iOS 15.4 Released on 2022-03-14

MDN documentation

Specifications

CSS Values and Units Module Level 4 (#sign-funcs), from Cascading Style Sheets (CSS) Working Group (W3C).

Web Platform Tests (WPT)

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Surveys

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