White space at top and bottom of page

Hi

I have a white space at the top of my pages displaying the text wp_head, and a white space at the bottom of my pages displaying wp_footer. http://ringtailmowing.com.au/

How did I manage to do this?
It's been there from when I started using the GP theme, I thought it would be a simple setting somewhere but I can't seem to fix it.
I'm using BeaverBuilder.

Thanks heaps
Greg