[Tutorial] How to add a Custom HTML5 Background Video

I’m still having trouble with my fixed navigation displaying after implementing my background video. I have a section with class “Navigation” that has absolute positioning at the bottom of my hero section, and a navbar that appears when “Navigation” scrolls out of view, with class “Fixed Navigation.” However, after implementing the background video, “Fixed Navigation” no longer appears when scrolling, but seems to disappear behind the second section (“About Us”) as if the z-index is lower than everything else. I have raised the z-index on “Fixed Navigation” to be higher than everything on the page, but am still having the same issue.

The preview link is here:
https://preview.webflow.com/preview/newanglecreative-test?preview=d14ffda93b1859b14ff7f93096c2129b