contain property lets developers limit the scope of the browser's styles, layout and paint work for faster and more efficient rendering. This CSS module describes the contain property, which indicates that the element’s subtree is independent of the rest of the page. This enables heavy optimizations by user agents when used well.CSS is a language for describing the rendering of structured documents (such as HTML and XML) on screen, on paper, in speech, etc.
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BROWSER SUPPORT FOR
CSS Containment element is not supported by Chrome version 4 to 51. Chrome 52 to 67 supports this browser property completely.
This element is not supported by Mozilla Firefox browser version 2 to 40. This browser property is not supported but can be enabled for Firefox 41 to 60.
IE browser doesn't support this web element.
Safari browser version doesn't support this browser property.
This browser element is not supported by Microsoft Edge browser.
Early Opera browser versions from 10.1 to 37 doesn't support CSS Containment element.
CSS Containment is not supported but can be enabled by Opera version 38 and 39. Opera 40 to 53 supports it completely.
Information sourced from
"Can I use" provides up-to-date browser support tables for support of front-end web technologies on desktop and mobile web browsers.
Other Browser Elements and Properties
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