Open or misplaced <div> tag?

I can’t figure out what is causing the colored box under the menu at the bottom of this page: https://70.98.111.50/~tamarahi/?cat=5

It is supposed to look like this at the bottom: https://70.98.111.50/~tamarahi/?p=57

Is there an open or misplaced tag?

Any help would be greatly appreciated.