Web features explorer

Time-relative pseudo-selectors

Limited availability

The :past and :future CSS pseudo-classes match prior or upcoming text track cues during media playback.

Browser support

  • Chrome 23 Released on 2012-11-06
  • Chrome Android 25 Released on 2013-02-27
  • Edge 79 Released on 2020-01-15
  • Firefox Not supported Bugs: 865401
  • Firefox for Android Not supported
  • Safari 7 Released on 2013-10-22
  • Safari on iOS 7 Released on 2013-09-18

Baseline availability blocked since January 2020 by Firefox (78 months)

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MDN documentation

Specifications

Usage (according to Chrome Platform Status)

~0.197% of page loads. More data at chromestatus.com.

Web Platform Tests (WPT)

View the latest WPT test results for this feature

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