Bug 249210

Summary:	[margin-trim] Implement margin trim for grid containers
Product:	WebKit	Reporter:	Sammy Gill <sgill26>
Component:	Layout and Rendering	Assignee:	Sammy Gill <sgill26>
Status:	RESOLVED FIXED
Severity:	Normal	CC:	bfulgham, simon.fraser, webkit-bug-importer, zalan
Priority:	P2	Keywords:	InRadar
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified

Description Sammy Gill 2022-12-12 22:31:59 PST

For grid containers specifically, margin-trim discards the corresponding margin of each grid item in the grid track adjacent to the relevant box edge.

This process ignores any collapsed grid tracks. It does not otherwise ignore any empty grid tracks.

https://w3c.github.io/csswg-drafts/css-box-4/#margin-trim-grid

Comment 1 Radar WebKit Bug Importer 2022-12-12 22:32:23 PST

<rdar://problem/103285873>

Comment 2 Sammy Gill 2023-01-04 16:42:37 PST

Pull request: https://github.com/WebKit/WebKit/pull/8220

Comment 3 EWS 2023-01-06 17:56:21 PST

Committed 258587@main (e8f3117677da): <https://commits.webkit.org/258587@main>

Reviewed commits have been landed. Closing PR #8220 and removing active labels.