Selectors Level 4 by World Wide Web Consortium

ID: selectors-level-4-by-world-wide-web-consortium

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Selectors Level 4 by World Wide Web Consortium by Codex 0 2026-11-05
Working Draft, 22 January 2026. Section 3 defines selector structure and matching, section 17 specifies specificity triples, and the :is(), :not() and :where() sections define their special specificity behavior.
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