This is the site i am using as a test site:
http://test.pafo.net/
My problem is that the pages, even thou they are equal, they change in position.
If you click on Seite 2 and then Start and keep clicking on them, you will see that the entire container is moving a little.
The only difference between those pages are that Seite 2 has more example text, nothing else.
Whats causing this? Did i forget an attribute in the stylesheet somewhere?
Seite 2 gets a scrollbar. That alters the page dimensions. Because your content is centered, it appears to move to the left half the width of the vertical scrollbar.