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

Logically speaking, there are 4 options:
1. [`contain-intrinsic-block-size: from-element`](https://drafts.csswg.org/css-sizing-4/#valdef-contain-intrinsic-width-from-element) requires `contain: size`.
2. [`contain-intrinsic-block-size: from-element`](https://drafts.csswg.org/css-sizing-4/#valdef-contain-intrinsic-width-from-element) doesn't require `contain: size`.
3. [`contain-intrinsic-block-size: from-element`](https://drafts.csswg.org/css-sizing-4/#valdef-contain-intrinsic-width-from-element) requires not `contain: size`.
4. Make it a separate, new CSS property. It will then need to define the relationship with `contain-intrinsic-block-size`; i.e., which should win when both are specified.

I don't have a strong preference.

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Received on Wednesday, 21 January 2026 06:18:59 UTC