Full-screen videos are being covered by header image

Hello,
I am looking for help resolving a problem on a video page on my website https://eilonmorris.com/eilon-morris/videos/ . When I maximise the embedded videos to full-screen the top third of the video remains covered by the header image and text. Is there a way to stop the header from appearing over the full-screen videos or possibly to remove the header from the page entirely if the first option is not possible. Any guidance would be greatly appreciated.

The page I need help with: [log in to see the link]