*{margin:0;padding:0;}
#container{
		width:600px;
		height:800px;
		border:2px solid black;
	
}
header{
	width:100%;
	height:100px;
	background:green;
	
}
#content{
		width:100%;
		height:600px;
		background:yellow;
}
footer{
	width:100%;
	height:100px;
	background:green;
	
}