BP Daily Theme CSS Customisation

Hi,

Currently I am having a bit of difficult styling with css.

Currently I have selected the technology.css and have customised it accordingly.

All articles and post do not have backgrounds on theme. E.g. http://teslaschool.org/science/energy/the-southern-polar-lights-aurora-australis/

However when I go into Pages or Forums e.g.

http://teslaschool.org/siteforums

http://teslaschool.org/about-2/

I am trying to remove the white background on the forum and page so the body text show up.

If I make it black then it will go black on the posts.

Therefore the best way is to remove the white background.

Anyone know a work around for this?

Thanks