First off, love the idea behind this site I think I'll be making use of it from now on.

As for the issue, what I expect is the sidebar to be hidden on mobile, and shown via some kind of navbar menu dropdown/button.

Another thing is on pages with code blocks (for example: https://open-ui.org/contribute ) things overflow massively.

Edit: I'm just assuming it's the codeblocks and not something else, I haven't thoroughly investigated