Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The ::cue-region
CSS pseudo-element matches WebVTT cues within a selected element. This can be used to style captions and other cues in media with VTT tracks.
The properties are applied to the entire set of cues as if they were a single unit. The only exception is that background
and its longhand properties apply to each cue individually, to avoid creating boxes and obscuring unexpectedly large areas of the media.