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

kojiishi has just created a new issue for https://github.com/w3c/csswg-drafts:

== [css-sizing] Should `contain-intrinsic-*: from-element` require `contain:size`? ==
The [`from-element`](https://drafts.csswg.org/css-sizing-4/#valdef-contain-intrinsic-width-from-element) keyword is for "Auto-resize iframes based on content" based on [the resolution in 2021](https://github.com/w3c/csswg-drafts/issues/1771#issuecomment-989034819).

When it applies only to `<iframe>`, which has little change by `contain:size`, should it require `contain:size` to be effective?

/cc @tabatkins @chrishtr @bfgeek 

Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/13182 using your GitHub account


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Received on Wednesday, 3 December 2025 08:16:45 UTC