How do I change my dropdown menue from vertical to horizontal?

Or so I thought…went through the whole tutorial, but in the end it didn’t work. The Dropdown Menue looked the way I wanted it to, but once I hoverd over the Projects-Button, it showed up and didn’t disappear again. So I tried to rebuild my old menue and guess what…it didn’t work either. Did the Wix-Team change anything? It used to work just fine.