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Last updated 2022-10-19 20:57:50
This is a page from the Cascading Style Sheets Working Group Blog. Some other places to find information are the “current work” page, the www-style mailing list, the Future of CSS syndicator, and the issue list on Github.
Do you want to know how the CSS WG works? Fantasai has written about:csswg, An Inside View of the CSS Working Group at W3C.
The CSS Working Group has published an updated Working Draft of CSS Values and Units Level 4. This specification defines the CSS property definition grammar, and the value types that are common across many specs, such as <length> or <string>. We will also be posting a synchronized version of CSS Values and Units Level 3 shortly (as a CR, it needs to pass additional reviews).
Most changes since the last WD are largely error corrections and refinement of existing features, see full changes list. We also added a new section defining in generic terms the computation pattern for coordinating list-valued properties (like background-*), so that it can easily be referenced by other property sets (like animation-*). The remaining open issues are largely centered around two topics: clarifying url() handling and refining details of the viewport units and their interaction with the “initial containing block”.
With the draft in a largely-completed state, this is essentially the last call for wide review. See also the complete list of additions since Level 4.
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-values-4]) and your comment topic in the subject line. (Alternatively, you can email one of the editors and ask them to forward your comment.)