Re: [csswg-drafts] [css-sizing] Should `contain-intrinsic-*: from-element` require `contain:size`? (#13182)

> `iframe-intrinsic-height: auto? <length [0,∞]>`

Requiring `auto` works fine for me.

> I'm also wondering if this will always be a height, or a block size, or what happens when the subdocument is orthogonal, etc.

It should be a block size for the parent document, to prevent leaking `writing-mode` of the embedded documents.

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Received on Thursday, 22 January 2026 16:56:42 UTC