Apply a custom css when you enter theater mode in YouTube, hiding everything except the video.
< 脚本 YouTube True Theater Mode 的反馈
Change line with @match to // @match https://www.youtube.com/watch*This way this extension won't break search line if there are no video on the page.
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Change line with @match to
// @match https://www.youtube.com/watch*
This way this extension won't break search line if there are no video on the page.