*{
	box-sizing: border-box;
	font-family: Tahoma;
}

.header {
	text-align: center;
	background: gray;
	padding: 10px;
}

.body {
	padding: 70px;
	background: #bac2bf;
}

.header h1 {
	font-size: 50px;
}

.topnav {
	overflow: hidden;
	background-color: #333;
}

.topnav a {
	float: left;
	display: block;
	color: #f2f2f2;
	text-align: center;
	padding: 14px 16px;
	text-decoration: none;
}

.topnav a:hover {
	background-color: #ddd;
	color: black;
}

.content {
	float: center;
	width: 75%;
}