section {
	width: 100px;
	height: 100px;
	background-color: black;
	color: white;
	font-family: Helvetica;
	font-size: 30px;
	float: left;
}

.red {
	margin-left: 100px;
	margin-right: 30px;
	margin-bottom: 50px;
	margin-top: 50px;
	padding: 100px;
	border: 3px solid blue;
	background-color: red;
}

.green {
		background-color: green;
		position: fixed;
		top: 600px;
		left: 200px;
}

body{
	height: 10000px;
}

.blue {
	background-color: blue;
}