CSS WG Blog Updated CR of CSS Contain

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Updated CR of CSS Contain

By Florian Rivoal February 4, 2019 (Permalink)
Categories: publications

(This should have been published much earlier. Apologies for the belated announcement).

The CSS WG has published a Candidate Recommendation and invites implementations of the CSS Containment Module Level 1.

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.

This is a minor update, driven by implementation experience and testing, focused on bug fixing and clarifications. Barring anything unexpected, the CSS-WG expects little to no change after this. People who intend to review this specification but have not yet had the chance to do so are strongly encouraged to look at it as soon as possible, as implementations are progressing, and growing usage in the wild will increasingly limit possible changes.

Significant changes are listed in the change section. A comprehensive test suite for the full specification was developed. A Disposition of Comments is also available.

Please send feedback by either filing an issue in GitHub (preferable) or sending mail to the (archived) public mailing list www-style@w3.org with the spec code ([css-contain]) and your comment topic in the subject line. (Alternatively, you can email one of the editors and ask them to forward your comment.)

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Last updated 2019-02-04 05:14:24