*{
	box-sizing: border-box;
	margin: 0;
	font-family: sans-serif;
}
html, body{
	height: 100%;
}
header{
	background: #16a085;
	color: #ecf0f1;
	height: 100px;
	text-align:center;
	line-height: 100px;
}
nav{
	display: inline-block;
	height: calc(100% - 150px);
	width: 200px;
	vertical-align:top;
}
section{
	display: inline-block;
	height: calc(100% - 150px);
	width: calc(100% - 200px);
	vertical-align:top;
}
footer{
	background-color: #16a085;
	text-align : center;
	height: 50px;
	line-height: 50px;
	color: #ecf0f1;
}