Bug 277117

Summary: Implement CSS Box Sizing stretch keyword
Product: WebKit Reporter: Karl Dubost <karlcow>
Component: CSSAssignee: Anne van Kesteren <annevk>
Status: RESOLVED FIXED    
Severity: Normal CC: annevk, austintatious, benoit.rouleau, dgrogan, jhansen327, koivisto, nileshprajapati, ShreckYe, webkit-bug-importer, woodlxf00
Priority: P2 Keywords: BrowserCompat, InRadar
Version: Other   
Hardware: Unspecified   
OS: Unspecified   
URL: https://drafts.csswg.org/css-sizing-4/#valdef-width-stretch
Attachments:
Description Flags
rendering in safari, firefox, chrome (mozilla test case) none

Karl Dubost
Reported 2024-07-25 19:48:39 PDT
On https://drafts.csswg.org/css-sizing-4/#valdef-width-stretch stretch is defined as: Applies stretch-fit sizing, attempting to match the size of the box’s margin box to the size of its containing block. See § 6.1 Stretch-fit Sizing: filling the containing block. to note that this behavior is currently covered by -webkit-fill-available. This value also creates webcompat issues for Firefox/Gecko https://groups.google.com/a/mozilla.org/g/dev-platform/c/-pMSV-kgUjA/m/VRL09R1NAAAJ -webkit-fill-available: https://bugzilla.mozilla.org/show_bug.cgi?id=1872755 stretch: https://bugzilla.mozilla.org/show_bug.cgi?id=1789477 Webcompat issue https://webcompat.com/issues/115962 https://webcompat.com/issues/92483 https://webcompat.com/issues/56698
Attachments
rendering in safari, firefox, chrome (mozilla test case) (939.52 KB, image/png)
2024-11-25 17:04 PST, Karl Dubost 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Karl Dubost
Comment 1 2024-07-25 19:50:16 PDT
One possibility is to make `-webkit-fill-available`, an alias of `stretch` IF it doesn't create webcompat issues.
Radar WebKit Bug Importer
Comment 2 2024-07-25 19:50:25 PDT
<rdar://problem/132539604>
Tim Nguyen (:ntim)
Comment 4 2026-03-02 01:10:39 PST
*** Bug 292076 has been marked as a duplicate of this bug. ***
Tim Nguyen (:ntim)
Comment 5 2026-03-02 01:10:47 PST
*** Bug 300661 has been marked as a duplicate of this bug. ***
Anne van Kesteren
Comment 6 2026-03-02 04:11:06 PST
Pull request: https://github.com/WebKit/WebKit/pull/59705
EWS
Comment 7 2026-03-17 07:15:59 PDT
Committed 309405@main (fdfcbee33b6e): <https://commits.webkit.org/309405@main> Reviewed commits have been landed. Closing PR #59705 and removing active labels.
Anne van Kesteren
Comment 8 2026-03-17 23:13:16 PDT
*** Bug 241104 has been marked as a duplicate of this bug. ***
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