:past
A selector used with WebVTT subtitles to style the text that has already been spoken in the current video caption.
Quick example
video::cue(:past) {
/* Dims the subtitles that have already been played */
color: gray;
}:past Browser Support
Widely available Since 2015 94% global usage
This feature is well established and works across many devices and browser versions. It has been available across browsers since 2015.
Safe to use without fallbacks.
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