Horizontally centered, height-fixed player Flex achieves horizontal and vertical centering.md The following is a completed meaning map subtitle WebVTT Example To add subtitles to a video, just add it, for example, but you also need to pay attention to the subtitle format Original subtitles 1 00:00:34,574 --> 00:00:40,305 Title: "The Ultimate Interview" Translation: Blue 2 00:01:52,800…