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Last updated 2021-12-31 23:51:18
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>.
This update defers the toggle() and attr() functions to Level 5, and includes a first draft of integration with the Fetch specification. Other changes since the last WD are largely error corrections and refinement of existing features, see full changes list. We expect this to be the full feature set for Level 4, and will be working to resolve the remaining open issues in preparation for a transition to Candidate Recommendation.
Existing Level 4 additions since Level 3 include mix() notation, src() notation, a variety of new viepwort units, typographic units for ideographic characters and line-height-relative measurements, and a slew of math functions including comparisons, rounding, and trigonometry. Future additions will go into Level 5.
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.)