Nav Bar Drop Down Options Hidden behind video

Can Anyone Help!?
I’m working on a site for a client, and I’m having problems with the drop down menu selections on the nav bar falling behind the background video. They are wanting the video as a header video, so it must stay on the “homepage.” Can anyone guide me in being able to access the drop down menu on “services” and “conditions” and still be able to keep the header video? Thank you in advanced!
Here is my read only link:
https://preview.webflow.com/preview/southern-head-neck-surgery?utm_medium=preview_link&utm_source=dashboard&utm_content=southern-head-neck-surgery&preview=915511a7fbbebf30537373c1e33976df&workflow=preview