SORRY! (can you delete above post?)
i deleted everything from the lines you stated, my mistake!
now that i did what you said i can tell, that it looks almost fine… there is now a white backround when scrolling down on the tablet… but when i scroll down to the very end of the page there is a funny overlay of page content with the navigation or better its background… i think you need to check yourself on a tablet to understand what i mean…
