CSS Namespaces is a CSS module that allows authors to specify XML namespaces in CSS. Reference At-rules @namespace Guides None. Specifications Specification Status Comment CSS Namespaces Module Recommendation Initial definition Browser compatibility Desktop Mobile Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari Basic support 1.0 1.0 (1.7 or earlier) 9.0 8.0 1.0 Feature Android Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile Basic support ? ? ? ? ? ?