Background art not full bleed - weird padding top and bottom of homepage...

I've added background art for my homepage - along with a logo load code for my animation. I've set the background art to be full bleed. 

However, there's a weird padding on the top and bottom of the page I can't seem to get rid of. I've tried everything like this:

body {
  padding-top: 0;
  padding-bottom: 0; 
}
 

But it doesn't seem to work... How should I find the issue and resolve this? 

Can you share your website URL and this page?