#container {
	width: 1200px;
	height: 600px;
	margin: 0 auto;
}

.box {
	width: 1200px;
	height: 200px;
	border: 2px solid black;
}

.box2 {
	width: 1200px;
	height: 400px;
	border: 2px solid black;
}
 
.center {
	text-align: center;
}