Re: [csswg-drafts] Reconsider <An+B># for :heading (#12599)

A list of comma-separated numbers is trivial complexity (and comma-separated lists in general are extraordinarily common in CSS), and worth it for avoiding forcing authors to write `:is(:heading(1), ...)` just to style several heading levels at once. The existing tag-based method is just `:is(h1, h2, h3)`, which is nice and easy; we shouldn't make author's lives significantly harder to do the same thing with `:heading()` if we can avoid it.

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Received on Wednesday, 13 August 2025 15:27:58 UTC