Page jumps while loading

HI there

I’ve just made a new site using enfold. Everything work perfectly – as always with Enfold – but for some reason the pages jumps when loading. It’s just a little jump, but I cannot figure out why it does it – or what I do to fix it.

When I go to the site using my mobilephone, I see at large white space below the picture in the bottom. That might be what causes the problem, but again: I don’t know how to resolve it.

Please help :-)