Gameport theme, background change run on.

hey everyone.
https://www.darksaintproductions.com is my site. I have a small issue though. Changing the background to default has caused it to repeat through out instead of stopping. I have checked this against another background pic and it does the same thing.

What am I missing in the CSS code to change? I have changed a couple things but to no avail.

Thanks for the help!