Upfront & UberMenu

Hi, I need some help with the theme and displaying an UberMenu.

http://www.mississauga.thecyc.ca is the site I am currently working on before I clone the settings to other sites. I placed an UberMenu using a text box and a shortcode on the Fixer/Upfront theme. The menu displays but the subitems are hidden behind other elements on the page.

Is there a way to fix this?