body {
	margin: 0px;
	background: linear-gradient(rgb(150,220,255),navy);
	background-attachment: fixed;
}
#wrapper {
	width: 800px;
	margin: 20px auto 60px;
	border: 1px solid gray;
	padding: 20px;
	background-color: #ffffff;
}
ul li {
	list-style-type: none;
	display: inline-block;
	margin-right: 50px;
}
main {
	min-height: 500px;
}
footer {
	text-align: right;
	font-style: italic;
	color: gray;
}