Image behind categories and widgets

How can I make the background behind the categories and widgets an image?
I want it to look like this:



This one, on the picture, is not a forum made via forumotion, but I want to know if it's possible to do the same in a forumotion forum...

I think it is possible, just not sure how you do it.

I think the same, but I don't know how to do it either.

Code:

body{

background: url('LINK') no-repeat fixed;
}

put that in your CSS.

AussieOz wrote:I think it is possible, just not sure how you do it.

Hello,
Please post only if you know the answer to the problem because this can be considered flooding/spamming. Thank you.