You need to increase the top margin for the category icon/description so that the page starts to display below the background image you have added.

Find this:

.categoryIcon {
}

Change to this:

.categoryIcon {
margin-top:90px;
}

This then gives you the issue of your description not lining up. From what I can see in firebug you have a 4em top padding setting for <h1>, if you change this to 1em it should align. You need to check that this doesn't cause a conflict elsewhere.

h1 {
margin: 0.2em;
padding-top: 1em;
margin-top: 1em;
}

You have a few errors on this site you need to look at concerning google analytics as well.