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conformance · v150

v150 · media-element-pseudo-classes — conformance probe

8 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://html.spec.whatwg.org/multipage/semantics-other.html#pseudo-classes chromestatus: #5068277495758848 generated 2026-06-03T23:02:39Z by codex-media-assets-repair
0
pass
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fail
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blocked
8
total
id contract kind verdict detail
playing-pseudo-class-selector The :playing pseudo-class parses as a valid selector for audio elements. spec ↗ script
paused-pseudo-class-matches-default-media :paused parses and matches a default paused media element. spec ↗ script
muted-pseudo-class-matches-muted-media :muted parses and matches a media element with muted set. spec ↗ script
seeking-pseudo-class-selector The :seeking pseudo-class parses as a valid selector for media elements. spec ↗ script
buffering-and-stalled-selectors :buffering and :stalled parse as valid media-element state selectors. spec ↗ script
volume-locked-pseudo-class-selector The :volume-locked pseudo-class parses as a valid selector for audio elements. spec ↗ script
stylesheet-with-media-pseudo-classes Stylesheet rules using media pseudo-classes are accepted rather than dropped. spec ↗ script
local-media-fixtures-available The local CC0 audio and video fixtures used by the demos are served with media content types. spec ↗ script