UberMenu floating over content

Hey,
I’m building my companies new website and have come into a problem with the menu (ubermenu) floating over the content, but only on the below page:

http://isleofwightwebhosting.co.uk/clients/onestopsailing/sailings/?search_keywords=&search_region=0&search_categories%5B%5D=185&search_context=304

You can see some of the map on the left and search function to the right is covered.

Uber believe I should add:

#content{
  margin-top:130px;
}

to the custom CSS, however it’s not made a difference.

If anybody can help it’d be much appreciated.

Cheers,