Fix the scroll bars turning up on the banner

[cafelow]

@sebgrebe I've asked you about this before, and since you couldn't replicate this the issue was rejected I think.

But someone else has had the same issue - so I'd like it to get addressed at some point.

When the window size is small enough I notice that there are two additional scrollbars below the top banner, and one additional scrollbar to the right of it. This occurs at the same point as the menu automatically being hidden when the window becomes small enough. The scrollbars do not seem to have any function, and there is no 'place' to scroll to. When appearing, they somewhat obsure the main title of a page. I am using Chrome.