How to bring a list of categories in a modal window to the front?

Question

CMS

Hello. Please tell me how to fix the "list of categories" in the modal window in the mobile version so that it is in the foreground. Here is the site. In the mobile version, click on the "Categories" link, a modal window with categories will appear, but it will be lower level, but you need to pull it to the fore.

Answer 1

remove the overflow:hidden style from the header first