I have a set of three elements that you need to see on the initial screen, while the material in the body below these elements should be below the bottom of the initial screen, but the user should still be able to scroll to everything after loading. A great example of this is the landing page on dropbox.com (upon logout).
No matter how much the user scales, items below these lines remain below him and are not visible until the user scrolls down. I am looking for a good CSS or jQuery solution.
I saw this one , but I can't just make these 3 elements absolute.
The best way for me to do this is to increase the third height of the div to the bottom of the initial screen, how can I do this?
EDIT: I have about 6 divs total, and I want the first 3 to be visible, and the rest should be below the initial borders of the screen.
EDIT: here is a div layout image: 
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