body {
	width: 960px;
	margin: 2em auto;
	font-family: Arial, sans-serif;
	font-size: 16px;
	line-height: 1.4;
}

h1 {
	font-size: 2em;
	font-weight: normal;
	margin: 0 0 1rem 0;
}
section {
	padding: 2rem;
	border: 1px solid #ccc;
	margin: 4rem 0;
	background-color: #fff;
}

aside {
	font-size: 24px;
	font-family: Georgia, Serif;
	font-style: italic;
	background-color: #aaa;
	color: #fff;
	padding: 1.5rem;
	width: 15rem;
}

.section-one aside {
	float: right;
}

.section-two {
	position: relative;
}

.section-two aside{
	position: absolute;
	bottom: 0;
	right: 0;
}

.section-three aside {
	background-color: green;
	position:fixed;
	top: 0;
	right: 0;
	z-index: 1;
}

.section-four {
	position: relative;
}

.section-four aside:first-of-type {
	background-color: red;
	position: absolute;
	top: 50%;
	left: 50%;
	margin-left: -144px;
	margin-top: -106.5px;
	z-index: 1;
}

.section-four aside:last-of-type {
	background-color: black;
	position: absolute;
	top: 50%;
	left: 50%;
	margin-top: -96.5px;
	margin-left: -134px;
}