miljenko1 on "eliminating space below menu"

hi, i placed into homepage header.php in my Twenty Eleven Child theme a Responsive Slider instead of a regular header. I decided to place the menu above the header, and this is what I got:
http://www.villa-ankora.com/apartments
There is a narrow space between the menu and Responsive Slider which I want to eliminate. I don't know how.
Sincerely,
Miljenko