Make the navigation bar stick at the top in Cafe Pro theme.

style.css

/* Genesis Cafe Pro child theme style.css */

/* Make sure css changes are withing the max-width: 800px media query */
@media only screen and (max-width: 800px) {
    
    /* line ~1965  */
    .nav-primary,
    .nav-primary.fixed {
        /* set the position to fixed */
    	position: fixed;
    	/* make the menu stick at the top */
    	top: 0;
    }
    
    /* Optional.  Set top to 32px if admin bar is present */
    body.admin-bar .nav-primary,
    body.admin-bar .nav-primary.fixed {
        top: 32px;
    }
    
    /* Optional.  Add padding to top top for widget area */
    body{
    	padding-top: 44px;
    }

}