Fullwidth video background only shows on half the video

Hi, I am having trouble with a website where the divi fullwidth header is bugged. I´ve made a video to use as a background, but when publishing, the video aligns to the right and only half the video is displayed (as shown in the image).

In the preview section using the visual builder, the video is aligned correctly. Might there be some other CSS I´ve written that creates this bug?
I´ve tried it in Chrome, Firefox and Safari, so no caching problem.

URL for example: https://www.flybyeiendom.no/videoheader/

Does anyone have an idea of why this is happening?

Thank you in advance!

 

Thank you, but it didn´t do the trick. The video seems to get cropped in the middle..
I ended up using a fullwidth code-module based on W3Schools - https://www.w3schools.com/howto/howto_css_fullscreen_video.asp