body {
	width: 100%;
	margin: 0;
	padding: 0;
}
main {
	position: relative;
}
main:after {
	display: block;
	clear: both;
	content: "";
}
article {
	float: left;
	width: calc(100% - 400px);
}
aside {
	float: left;
	width: 400px;
}
.control-button {
	display: inline-block;
	margin: 5px 2px;
	padding: 3px 10px;
	border: 1px solid black;
	border-radius: 4px;
	font: 12px/12px sans-serif;
	color: black;
	text-decoration: none;
}