#container {
	background-color: yellow;
	width: 600px;
	margin: 0 auto;
}

header {
	background-color: red;
}

aside {
	background-color: green;
	width: 200px;
	float: left;
}

section {
	background-color: blue;
	width: 400px;
	float: left;
}

p {
	margin: 0;
}

footer {
	background-color: orange;
	clear: both;
}