Re: [csswg-drafts] [selectors] Add selector match custom element (#10407)

One might consider https://github.com/w3c/csswg-drafts/issues/11001 as sufficient to make this redundant. If we had e.g. `:builtin`, then `:not(:builtin)` would obviate the need for something like `:custom-element`. I don't think OP is an exact dupe of https://github.com/w3c/csswg-drafts/issues/11001 but I do think anyone looking at this issue should investigate https://github.com/w3c/csswg-drafts/issues/11001 first. 

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Received on Monday, 11 May 2026 10:08:15 UTC