Web features explorer - Viewport units

Web features explorer

The vw, vh, vmin, and vmax CSS viewport units are relative to the size of the viewport, and are used to size elements in relation to the viewport's dimensions.

Browser support (view on caniuse.com)

Chrome 26 Released on 2013-03-26
Chrome Android 26 Released on 2013-04-03
Edge 16 Released on 2017-10-17
Firefox 19 Released on 2013-02-19
Firefox for Android 19 Released on 2013-02-19
Safari 7 Released on 2013-10-22
Safari on iOS 7 Released on 2013-09-18

MDN documentation

Relative length units based on viewport, in `<length>` CSS type

Specifications

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

Web Platform Tests (WPT)

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Interop

Included in Interop 2022

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