fixed frame issues

Hi all!

I have the fixed frame border set on my site. For some reason when using the trackpad on a laptop the frame adjusts or seems “loose” and slides to the left to reveal a grey border on the right hand side. Please view the link in the private area.

Also, when you scroll down on the page the hamburger icon appears to be on top of the top frame. I tried adjusting the z-indexes but wasn’t able to figure it out.

Thank you in advance! :)