Limited Availability
Selectors
id: time-relative-selectors
Time-relative pseudo-selectors
The
:past and :future CSS pseudo-classes match prior or upcoming text track cues during media playback.
Baseline Status:
This feature is currently Limited and is missing in at least one major browser engine.
Desktop Browser Engine Support
Google Chrome
23
Supported
Mozilla Firefox
—
Unsupported
Apple Safari
7
Supported
Microsoft Edge
79
Supported
Mobile Browser Engine Support
Chrome Android
25
Firefox Android
—
Safari iOS
7
Specifications and References
MDN Browser Compat Data Keys: