.main {
	height: 900px;
	width: 1050px;
	margin-right: auto;
	margin-left: auto;
}
.header {
	float: left;
	height: 115px;
	width: 1050px;
}
.content {
	float: left;
	height: 700px;
	width: 1050px;
}
.copyright {
	float: left;
	height: 85px;
	width: 1050px;
}