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[css-contain] Is it ok that contain:layout is a CB for fixpos/abspos descendants but doesn't establish a stacking context? · Issue #2942 · w3c/csswg-drafts · GitHub
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The containment spec for contain:layout:
- says that
contain:layoutestablishes a containing block for absolutely positioned and fixed positioned descendants, but - does not say that it establishes a stacking context.
This is the first feature in CSS that I'm aware of with this combination. I think it's worth some consideration of whether this combination is sensible. Do the painting rules for abspos and fixpos elements contained by such an element work in a reasonable way?
/cc @MReschenberg
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