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conformance · v138

v138 · css-stretch-sizing-keyword — conformance probe

6 assertions drawn from the spec. Each is a single contract the spec text makes. Pass/fail reflects what this browser executed; blocked means the contract was not run because it needs user mediation, hardware, or another unavailable precondition. Open the page in Chrome stable / canary / Firefox / Safari to compare.

browser: spec: https://drafts.csswg.org/css-sizing-4/#sizing-values chromestatus: #6176445286842368 generated 2026-06-01T09:15:00Z by conformance-author-v1-subagent
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pass
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fail
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id contract kind verdict detail
width-stretch-supported width: stretch is accepted as a sizing keyword (unprefixed). spec ↗ css-supports
height-stretch-supported height: stretch is accepted. spec ↗ css-supports
min-width-stretch-supported min-width: stretch is accepted. spec ↗ css-supports
max-width-stretch-supported max-width: stretch is accepted. spec ↗ css-supports
stretch-fills-margin-box width: stretch with horizontal margins yields a margin box equal to the container's width. spec ↗ script
stretch-differs-from-100percent Unlike width: 100% (which ignores margins), width: stretch accounts for margins. spec ↗ script