body {
	width: 900px;
	background-color: f1f1f1;
	margin:15px auto;
	border:1px solid #000;
}

#sidebarA {
	width: 180px;
	height: 350px;
	float: left;
	border-right: 2px solid #ef9c00;
	background-color: grey;
}

main {
	width: 718px;
	height: 350px;
	float: left;
	background-color: teal;
}


footer {
	clear: both;
	border-top: 2px solid #ef9c00;
	background-color: green;
}

h2 {
	padding: 1em;
	margin: 0;
	font-family: sans-serif;
	color: white;
}

header {
	border-bottom: 2px solid #ef9c00;
	background-color: purple;
}

nav {
	border-bottom:2px solid #ef9c00;
	background-color: maroon;
}