Custom menu/custom tab problem

Hi, I’m still very new to www.remarpro.com and I downloaded a free theme called Adelle by BluChic.

My problem is when I hover over my submenus, it’s only displayed half through.
For example I have a parent and static page named Foods, under Foods is my submenus named Breakfast, Lunch and Dinner. When I hover over it, their name gets cut to
-BREA
FAST
-LUNC
-DINN
R

The custom tab size is not wide as how it should be, but really tight and lengthened. I’m not good at explaining, I hope anyone out there can help me. I’m stuck.