Grandchild Overlap In Dropdown Menu

Hello everyone.

I am creating a website rather than a blog, and will have several instances of Parent-Child-Grandchild-GreatGrandChild pages.

I am currently using the producer theme (www.everythingaberystwyth.co.uk) and have created my first set of grandchild pages (see: /localservices/education/typeofschool/theschoolitself)

When you hover over the “education” option on the dropdown, the great grand child pages overlap one another. Is there a way to stop this in the theme itself, or by tweaking code? Or would it be better to redesign the pages with links in the main body to remove a level?

I really like this theme and don’t want to change it for something else!

Thanks for your help everyone!