video background doesnt show on desktop dawn theme

Store Design
1

my video background on page works perfectly on iphone mobile, but on desktop and android it doesnt show at all.

website: https://604ea0.myshopify.com/

pass: ears

this is how i did it -

https://ezfycode.com/blog/how-to-add-a-custom-background-image-to-any-shopify-theme

and i just changed the image shopify url to mp4 shopify url

2

if someone can help and he doesnt understand my question please send something i really need to solve it please