*{
	box-sizing: border-box;
	margin: 0;
	font-family: sans-serif;
	box-sizing: border-box;
}
html, body{
	height: 100%;
}
header{
	background: #16a085;
	color: #ecf0f1;
	height: 100px;
	text-align:center;
	line-height: 100px;
}
header h1 img{
	height: 70px;
	width: auto;
	vertical-align: middle;
}
nav{
	display: inline-block;
	height: calc(100% - 150px);
	width: 200px;
	vertical-align:top;
	background-color: #34495e;
	color: #D0D0D0;
	padding: 15px;
}
nav ul{
	list-style-type: none;
	padding: 0;
}
section{
	display: inline-block;
	height: calc(100% - 150px);
	width: calc(100% - 200px);
	vertical-align:top;
	background-color: #2c3e50;
	vertical-align:middle;
	color: #D0D0D0;
	padding: 15px;
	overflow: auto;
}
footer{
	background-color: #16a085;
	text-align : center;
	height: 50px;
	line-height: 50px;
	color: #ecf0f1;
}
nav .logo img{
	width: 50%;
	height: auto;
}
#yellow:hover{
	fill: #f6b93b;
}
#blue:hover{
	fill: #1e3799;
}
#red:hover{
	fill: #eb2f06;
}
nav li{
	transition: 0.3s;
	line-height: 1.5em;
}
nav li:hover{
	background-color: rgba(255, 255, 255, 0.3);
}
.logo{
	text-align: center;
}
section rect, section circle{
	transition: 0.3s;
	fill: #D0D0D0;
}
a{
	color: #C0C0C0;
}