Pagebackground CSS question

[aceofspades]

When applying a page background CSS function it applies to everything that is on top of the page background as well. Is there any way to stop it doing this? So this is what it is currently doing when i apply a css to the pagebackground (red transparent box there to show the affected areas):



But i dont want it to apply over the top of everything, i want it to be like this:



If anyone can help me get this working i promise i will stop with all the annoying questions on here!

James