Re: [csswg-drafts] [css-anchor-position-1] anchors-visible still needs more details (#13176)

(Relating to "which rect to use" discussion that happened during above discussion)

@tabatkins FWIW, [spec](https://drafts.csswg.org/css-anchor-position-1/#clipped-by-intervening-boxes) does explicitly use ink overflow rect:

> An anchor box anchor is clipped by intervening boxes relative to a positioned box abspos relying on it if anchor’s [ink overflow rectangle](https://drafts.csswg.org/css-overflow-3/#ink-overflow-rectangle) is fully clipped by a box which is an ancestor of anchor but a descendant of abspos’s containing block.

I think this is to handle fragmented anchor boxes. IIRC we made this change along with multicol-related position-visibility changes.

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Received on Thursday, 2 April 2026 22:23:40 UTC