Twenty ten css background image & wrapper color

hello wordpress community
I I’m using the theme twenty ten.
I have changed the background color to an image. In doing so, I have the lost the format for my wrapper color. The background image seems to have overridden the wrapper and removed any governing attributes. So instead of seeing my background image behind my white wrapper, all I can see is the background image, and no wrapper or page container??
*in firefox it looks as it should, but the problem in internet explorer.*
my site is https://www.americandreamenergysystem.com
Does this make sense? To understand my problem, look at the site in Firefox vs IE8 and it will be evident.
Does anyone have an idea why this might be, if so please give me a hand.
Thanks