Widely Available
CSS
id: nesting
Nesting
CSS nesting allows for shorter selectors, easier reading, and more modularity by nesting rules inside others.
Baseline Status:
Achieved Widely Available on Jun 11, 2026 (Cross-browser Newly Available since Dec 11, 2023).
Desktop Browser Engine Support
Google Chrome
120
Supported
Mozilla Firefox
117
Supported
Apple Safari
17.2
Supported
Microsoft Edge
120
Supported
Mobile Browser Engine Support
Chrome Android
120
Firefox Android
117
Safari iOS
17.2
Specifications and References