.header{
   /* position:fixed;*/
    width:100%;
	height:140px; 
	background: #eee;
	display:table;
	/*margin-bottom:200px;*/
	margin-bottom:0.5em;
 }

.header_logo{
	width:650px;
	display:table-cell;
	text-align:center;
	vertical-align:middle; 

}

.header_logo img {
     max-height:80%;
     min-height:60%;
     width:650px;
	 border:#eef solid 3px;
	 margin-bottom:0.5em;
}