Firefox 150 ships media pseudo-classes#29222
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caugner
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Mar 13, 2026
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According to https://bugzilla.mozilla.org/show_bug.cgi?id=2020775, this ships in Firefox 150.
caugner
requested changes
Mar 16, 2026
Co-authored-by: Claas Augner <495429+caugner@users.noreply.github.com>
caugner
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Mar 17, 2026
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Summary
:buffering:muted:paused:playing:seeking:stalled:volume-locked:volume-lockedparses but has no effect on Firefox as it is an OS level setting, but the WPT says it passesTest results and supporting details
dom.media.pseudo-classes.enabled:Related issues