Bug reports

Footer on mobile overlaps sidebar on the left, I suppose "Report a bug", theme switcher and other items should be placed horizontally on mobile, so they won't conflict with the left items.

iPhone XR (896x414px), landscape view, title is not fully visible as well as "X" close button.

If you open your website on mobile you'll see that the nav "burger" is not visible, but still it's clickable. Users can't navigate on the site using devices less than 770px.

Lines highlighting the product options in the left menu are placed incorrectly after zoom out/in. Mouse likely has to be pointing at one of the options during zoom out/in.