How to remove space between video background and menu in Brooklyn theme?

Store Design
1

I have added a video background to my store, however there is a huge gap between the background and the menu. Can anyone help me remove this space? Thank you! https://kampawnshop.myshopify.com/?_ab=0&_fd=0&_sc=1

2

Hello There,

Please share your store password and screenshot.
So that I will check and let you know the exact solution here.