Menu Covers up Image

Hello Thanks for the Catch Adaptive theme, I have just started using it. I like it but one problem: the menu covers up part of the featured image. On Desktop it's maybe OK but on mobile it covers a huge part of the image. I can't always crop my image so that there is "Dead" space at the top for the menu, and on mobile it is a large portion. Is there any way to make the menu stay above all image and all content all the time? I don't care if it is sticky or not, I just want my entire photo to always show when at the top of the page. http://www.turnercollins.com/booking/ Check it out on a smartphone! That is the only thing I need to fix! Thanks!