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conformance · v138

v138 · css-anchored-fallback-container-queries — conformance probe

5 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-anchor-position-2/#anchored-container-queries chromestatus: #5177580990496768 generated 2026-06-01T09:05:00Z by conformance-author-v1-subagent
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pass
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fail
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blocked
5
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id contract kind verdict detail
anchor-name-supported Anchor positioning baseline: anchor-name is supported (prereq for anchored fallback queries). spec ↗ css-supports
position-try-fallbacks-supported position-try-fallbacks is supported — without fallbacks, anchored() queries have nothing to match against. spec ↗ css-supports
anchored-fallback-container-query-parses @container anchored(fallback) is a valid container query condition syntax. spec ↗ script
container-type-anchored-supported container-type accepts 'anchored' so an element can be queried for anchored fallback state. spec ↗ css-supports
css-supports-anchored-container-query CSS.supports recognises the @container anchored() at-rule shape. spec ↗ script