body{
	padding: 0px;
	margin: 0px;
	background-color: grey;
	}
	
header{
	text-align: center;
	margin-top: 0px;
	margin-left: 0px;
	margin-right: 0px;
	margin-bottom: 10px;
	padding: 10px;
	background-color: green;
	
}