#head
{
	width: 1200px;
	height: 120px;
	background: #aaa;
	margin-left: auto;
	margin-right: auto;
	text-align: center;
	line-height: 120px;
}
#content
{
	width: 1200px;
	height: 500px;
	background: #ddd;
	margin-left: auto;
	margin-right: auto;
	text-align: center;
}
#footer
{
	width: 1200px;
	height: 100px;
	background: #eee;
	margin-left: auto;
	margin-right: auto;
	text-align: center;
	line-height: 180px;
}