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CSS Namespaces

CSS Namespaces is a CSS module that allows authors to specify XML namespaces in CSS.

Reference

At-rules

Specifications

Specification Status Comment
CSS Namespaces Module Recommendation Initial definition

Browser compatibilityUpdate compatibility data on GitHub

@namespace rule

Desktop
Chrome Edge Firefox Internet Explorer Opera Safari
Basic support 1 Yes 1 9 8 1
Mobile
Android webview Chrome for Android Edge Mobile Firefox for Android Opera for Android iOS Safari Samsung Internet
Basic support ? ? Yes ? ? ? ?

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https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Namespaces