Where Is "product Information" Table In Css?

I have been playing around for the last day getting my site switched over to a dark setting but I can not figure out where is located in order to make it a dark color. I have been using Firebug to find everything but this one must be inherited from something else. Essentially during checkout and after order completion I get the white box shown in the attachment.


Please use the CSS section in the Theme editor to override the required class.