Is this website not updated?

Question

1. Why can’t I click on the first line of the place where I post a comment? I have to click on the second line to post a comment.

2. Why I pause the video with a space, but I can’t use a space to reply to the video playing normally.

3. Why when writing a comment, pressing space after typing will cause the video to pause.

4. Why when writing a comment, use the arrow keys to fast forward or rewind the video.

   So embarrassing. . . .