Navigation bar covering work area in editor

Hello,

I have this problem with my editor window, the whole work area is beneath the side panel on the right? This is very frustrating since there is clearly space on the right and it covers a part of my design elements, as well as the first half of the navigation bar on the bottom. Any ways to fix this interface?


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