body {
	font-family:Verdana,Arial,Helvettica,sana-serif;
	background-color: white;
}
header {
	height:150px;
	margin-right:auto;
	margin-left:auto;  
	overflow:hidden;
	background-image: url("../img/cloud2.jpg");
	background-repeat: no-repeat;
	background-size: cover;
}
footer {
	bottom: 0;
	margin-right: auto;
	margin-left: auto;
	overflow: hidden;
	height: 200px;
}