Problems with dropdown menu in the Modality theme

I’m not used to working with CSS cods, but sitting right now and trying to change the functionality of a drop down menu in the Modality.

The submenu is there, but it settles behind the text / page instead of falling out in front of it. As soon as you move around on the side it ends up in the right position in front of the text content.

I’ve been searching to find a solution, but I don´t really know where in the css template I’ll adjust to get it to fold before the text from the beginning. I have solved most of my earlier problems with “trial and error” so far, but not this one …

The page is under construction and therefore not public yet.

Thankful for tips!

Ingegerd