xbody {
	height: 100vh;
	overflow: hidden;
	margin: 0px
}

.xheader {
	background: lightgrey;
	width: 100%;
	text-align: center;
}

#map {
	width: 100%;
	height: 100%;
}

.xfooter {
	background: lightgrey;
	bottom: 0;
	left: 0;
	width: 100%;
	position: fixed;
	text-align: center;
}