header {
    width: 100%;
    background-color: #333;
    color: #fff;
    /* padding: 10px 0; */

    /* banner */
	position: absolute; 
	top: 0px; 
	
	background-color: rgba(0, 0, 0, 0.5); 
	background-position: top; 
	height: 70px; 
	z-index: 100; 

}