HTML 中header,footer

<style>
#commonFooter {
	hight: 15px;
	width: 100%;
	text-align: center;
	background-color: #D3D3D3;
	position: absolute;
	bottom: 0px;
	left:0px;
}

#commonHeader {
	hight: 15px;
	width: 100%;
	text-align : center;
	background-color :#D3D3D3;
	position: absolute;
	top: 0px;
	left:0px;
}
</style>