CSS Containment

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 (launch bug) in:

• Chrome for desktop release 52
• Chrome for Android release 52
• Android WebView release 52
• Opera release 40
• Opera for Android release 40

Consensus & Standardization

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

Owner

• eae@chromium.org

Last updated on 2017-06-14