Badminton training. Free.

Actually the white space you are seeing is where his page hasn’t loaded yet. His page has lots of animated gifs And until they are all 100% loaded and playing, you see white space.

There can be alternative ways to write the HTML / do the videos, that doesn’t use animated gifs, so eg if a video is an mp4 then linking to it. Or, create an account on a video sharing site like youtube, and “embed” the video on your page, then the videos don’t have to fully load in order for your page to fully load.