html {
	min-height:100%;
	position: relative;
	min-width:500px;
	padding: 0px;
	margin: 0px;
}


body {
    background-color: powderblue;
	height: 100%;
	min-width:500px;
}
#wrapper{
	background-color: yellow;
	width: 120px;
	margin: 12px auto;
	height:100%;
}

#header {
	background-color:red;
	margin:0px;
	padding:0;
	width:100%;
	position: absolute;
	top: 0px;
	left: 0px;
}