Hello,
You have to have a menu set to the page for the header/menu area to show. Otherwise there is nothing to show in that area.
The black area has nothing to do with the template; that is actually part of your video file. Open the following in a browser and you'll see the black areas of the video file:
https://www.yoursite.com/images/map_puzzle_videoNEW.mp4If you want those removed you'd have to edit the mp4 file. But to get the menu/header area to show you need a menu published there; it is currently not.