Yes, here is a suggestion.
First, check your style editor and be sure that there is not simply an option there to disable the 'fixed' header.
If you don't see an option in your style editor, you can use the following CSS inserted into the CSS Editor:
.header-announcement-wrapper {
position: static;
}
#page {
margin-top: 0 !important;
}
Remember, the CSS Editor and the Style Editor are different editors. The style editor is where you have simple options to change the template. The CSS editor allows you to insert code.
-Brandon
