Bug 230274

Summary:	Do not propagate body style to viewport when html or body element is contained
Product:	WebKit	Reporter:	Rune Lillesveen <rune.lillesveen>
Component:	CSS	Assignee:	Nobody <webkit-unassigned>
Status:	RESOLVED FIXED
Severity:	Normal	CC:	bfulgham, dino, kevin_neal, koivisto, rbuis, simon.fraser, webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	Safari Technology Preview
Hardware:	All
OS:	All

Description Rune Lillesveen 2021-09-14 12:54:50 PDT

Tests like [1] fail in WebKit. The css-contain spec[2] has been changed after the CSSWG resolution in [3] stopping propagation from body to viewport for non-none used containment on root and body.

[1] https://wpt.fyi/css/css-contain/contain-body-bg-001.html
[2] https://drafts.csswg.org/css-contain-1/#c3
[3] https://github.com/w3c/csswg-drafts/issues/5913

Comment 1 Kevin Neal 2021-09-15 08:16:21 PDT

Thank you for filing. The appropriate engineers have been copied.

Comment 2 Radar WebKit Bug Importer 2021-09-15 08:16:54 PDT

<rdar://problem/83151391>

Comment 3 Rob Buis 2022-04-15 03:09:36 PDT

This was fixed by r244980.