Why is this happening?

I’m developing a homepage right now and want the footer (the charcoal box at the bottom of the page) to be directly at the bottom and not so you have to scroll to see it. If the content of the page is really long, then of course you wouldn’t be able to see it, but when the page is rather short, it should be at the bottom. I’ve done this before with no problems, but for some reason, it’s not working right now. If you wouldn’t mind looking at it for me, I’d appreciate it. The page is www.travelsolutions.com/garbagebin.