CSS Containment

CSS

A primitive for isolating style, layout, and paint. This allows authors to explicitly opt into a set of restrictions that enables user agent optimizations.

Documentation

https://developers.google.com/web/updates/2016/06/css-containment
https://developer.mozilla.org/en-US/docs/Web/CSS/contain

Specification

Editor's draft

Status in Chromium

Blink components: Blink

Enabled by default (tracking bug) in:

Chrome for desktop release 52
Chrome for Android release 52
Android WebView release 52

Consensus & Standardization

After a feature ships in Chrome, the values listed here are not guaranteed to be up to date.

Firefox: Public support
Edge: No public signals
Safari: No public signals
Web Developers: Positive

Owner

eae@chromium.org

Last updated on 2017-06-14