How we built it


The CSSGroupingRule interface represents an at-rule that contains other rules nested inside itself. Per spec, CSSMediaRule and CSSPageRule inherit from CSSGroupingRule.



Editor's draft

Status in Chromium

Enabled by default (launch bug) in:

  • Chrome for desktop release 45
  • Chrome for Android release 45
  • Chrome for iOS release 45
  • Android WebView release 45
  • Opera release 32
  • Opera for Android release 32

Consensus & Standardization

  • Shipped
  • No public signals
  • No public signals
  • No signals


Last updated on 2015-08-13