.box {	height: 100%;	width: 100%;	margin: 0px;}.box2 {	background-position: center center;	height: 400px;	width: 350px;	position: relative;	visibility: visible;	margin-top: 10%;	margin-right: auto;	margin-bottom: 10%;	margin-left: auto;	border: 6px solid #FFFFFF;}