Background video not showing in small viewports

I’m working with a video background as the hero section for the site, however, when I move to smaller canvas sizes it stops showing.
Also, I don’t really know why I’m not able to see true canvas sizes, the phone sizes are all messed, I’m not sure if you can see it in the read-only

Thank you, still in taking the first steps but loving Webflow

Here is my site Read-Only: LINK
(how to share your site Read-Only link)