html, body{
	height: 100%;
}
body{
	margin: 0;
	padding: 0;
	overflow: hidden;
	font-family: Arial, Helvetica, sans-serif;
	color: #999;
	background: rgb(255,255,255); /* Old browsers */
	background: -moz-radial-gradient(center, ellipse cover, rgba(255,255,255,1) 0%, rgba(196,196,196,1) 75%, rgba(145,145,145,1) 100%); /* FF3.6+ */
	background: -webkit-gradient(radial, center center, 0px, center center, 100%, color-stop(0%,rgba(255,255,255,1)), color-stop(75%,rgba(196,196,196,1)), color-stop(100%,rgba(145,145,145,1))); /* Chrome,Safari4+ */
	background: -webkit-radial-gradient(center, ellipse cover, rgba(255,255,255,1) 0%,rgba(196,196,196,1) 75%,rgba(145,145,145,1) 100%); /* Chrome10+,Safari5.1+ */
	background: -o-radial-gradient(center, ellipse cover, rgba(255,255,255,1) 0%,rgba(196,196,196,1) 75%,rgba(145,145,145,1) 100%); /* Opera 12+ */
	background: -ms-radial-gradient(center, ellipse cover, rgba(255,255,255,1) 0%,rgba(196,196,196,1) 75%,rgba(145,145,145,1) 100%); /* IE10+ */
	background: radial-gradient(ellipse at center, rgba(255,255,255,1) 0%,rgba(196,196,196,1) 75%,rgba(145,145,145,1) 100%); /* W3C */
	filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#ffffff', endColorstr='#919191',GradientType=1 ); /* IE6-9 fallback on horizontal gradient */
}

nav{
	text-align: center;
	margin-top: 50px;
	position: relative;
	z-index: 1;
}

nav li{
	list-style: none;
	margin: 0 10px;
	display: inline-block;
}
nav li a{
	color: black;
	text-decoration: none;
}
nav li a:hover{
	color: #999;
}