body{
	margin: 0;
	background-color: #f1f1f1;
}
header{
	background-color: brown;
	padding: 20px;
	text-align: center;
	color: white;
	font-family: "comic sans Ms", Arial;
}
nav{
	overflow: hidden;
	background-color: #333;
}
nav a{
	float: left;
	color: #fff;
	padding: 14px 16px;
	text-decoration: none;
}
nav a:hover{
	background-color: blue;
	color: white;
}
.column{
	float: left;
	padding: 10px;
}
footer{
	clear: both;
	background-color: brown;
	padding: 20px;
	text-align: center;
	color: white;
}