...THE FILE IS style.css...


/* @ #header */	
	#header .outline{
		position: relative;
		zoom: 1;
		z-index:15; /* ie drop-down fix */
		background-image:url('/wp-content/uploads/2013/02/banner.png');
		background-repeat:no-repeat;
		background-position:center;
	}


/* THE BACKGROUND LINES ARE WHAT YOU NEED TO ADD */