Problem with menu in tablets

Hi

I have built this site https://smalandairport.se based on the YooTheme YooNite.
The menu does not work fully in tablets (for menu selections Hitta din resa, Inf?r resan, P? flygplatsen).
If I push a long time with my finger on the menu selection I can choose to open up the page in a new tab, then it works. But not otherwise. =(
Anyone who has any idea what’s wrong?
I know I have been customising the css a lot, but I’ll be grateful if someone can help me understand what’s wrong.