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CSS Basic User Interface Module Level 3 (CSS3 UI)

drafts.csswg.org · 12,272 words · saved by 1 readers

Copyright © 2026 World Wide Web Consortium. W3C® liability, trademark and permissive document license rules apply. This specification describes user interface related properties and values that are proposed for CSS level 3 to style HTML and XML (including XHTML). It includes and extends user interface related features from the properties and values of CSS level 2 revision 1. It uses various properties and values to style basic user interface elements in a document. This is a public copy of the editors’ draft. It is provided for discussion only and may change at any moment. Its publication here does not imply endorsement of its contents by W3C. Don’t cite this document other than as work in progress. Please send feedback by filing issues in GitHub (preferred), including the spec code “css-ui” in the title, like this: “[css-ui] …summary of comment…”. All issues and comments are archived. Alternately, feedback can be sent to the (archived) public mailing list www-style@w3.org. This docume

CSS Basic User Interface Module Level 3 (CSS3 UI) CSS Basic User Interface Module Level 3 (CSS3 UI) Editor’s Draft , 19 June 2026 More details about this document This version: https://drafts.csswg.org/css-ui-3/ Latest published version: https://www.w3.org/TR/css-ui-3/ Previous Versions: https://www.w3.org/TR/2017/PR-css-ui-3-20171214/ Implementation Report: https://drafts.csswg.org/css-ui-3/implementation-report Feedback: CSSWG Issues Repository Editors: Tantek Çelik ( Mozilla ) tantek@cs.stanford.edu Florian Rivoal ( On behalf of Bloomberg ) Suggest an Edit for this Spec: GitHub Editor Test

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