[MarkFL]

If you would rather, you can add the class selector to your "additional.css" template, but you would have to do this for each style. If this is what you would prefer, then add this to the "additional.css" template (in each style you want to affect):

.below_body {
	background: url(image url) no-repeat center;
}

Replace "image url" with the URL of the image you want to use.