Re: [csswg-drafts] [css-anchor-position] Anchor Element's "Containing Block" (#12674)

Considering the new text, I think we need an additional clause. Something like (patching this very strictly):

* _possible anchor_ is an [=inline-level box=] or [=internal ruby box=], and _positioned el_'s [=absolute positioning containing block=] is formed by an ancestor of _possible anchor_ whose [=containing block=] is also _possible anchor_'s [=containing block=]

Or perhaps

* _possible anchor_ is an [=inline-level box=] or [=internal ruby box=], and _positioned el_'s [=absolute positioning containing block=] is formed by an ancestor of _possible anchor_.

Or possibly even

* _positioned el_'s [=absolute positioning containing block=] is formed by an ancestor of _possible anchor_

if that doesn't actually break anything here.

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Received on Friday, 12 September 2025 23:01:58 UTC