Strange Spacing with CSS

I am creating my first CSS site that strictly uses CSS rather than tables and I have run into a snag. I want the design to run off the page but it doesn’t stop at the bottom of the page it adds 50 to 100 pixels on the bottom no matter what size you make the window?

I have been looking at my code for several hours trying different combinations and I still can’t get it to fix itself. I have tested this problem in both FF and IE and it’s the same problem in both. So if someone can help me I would really appreciate it.

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