body{
	background: #000;
}
#cover{
	position: absolute;
	width:100%; height:100%;
	top:0; left:0;
	
	background: -moz-radial-gradient(center, ellipse cover, rgba(0,0,0,0) 0%, rgba(0,0,0,0) 50%, rgba(0,0,0,1) 100%); /* FF3.6+ */
	background: -webkit-gradient(radial, center center, 0px, center center, 100%, color-stop(0%,rgba(0,0,0,0)), color-stop(50%,rgba(0,0,0,0)), color-stop(100%,rgba(0,0,0,1))); /* Chrome,Safari4+ */
	background: -webkit-radial-gradient(center, ellipse cover, rgba(0,0,0,0) 0%,rgba(0,0,0,0) 50%,rgba(0,0,0,1) 100%); /* Chrome10+,Safari5.1+ */
	background: -o-radial-gradient(center, ellipse cover, rgba(0,0,0,0) 0%,rgba(0,0,0,0) 50%,rgba(0,0,0,1) 100%); /* Opera 12+ */
	background: -ms-radial-gradient(center, ellipse cover, rgba(0,0,0,0) 0%,rgba(0,0,0,0) 50%,rgba(0,0,0,1) 100%); /* IE10+ */
	background: radial-gradient(ellipse at center, rgba(0,0,0,0) 0%,rgba(0,0,0,0) 50%,rgba(0,0,0,1) 100%); /* W3C */
	filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#00000000', endColorstr='#000000',GradientType=1 ); /* IE6-9 fallback on horizontal gradient */
}
#canvas{
	display: block;
	position: absolute;
	margin: auto;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
}
#cover_info{
	width: 960px;
	height: 350px;

	font-family: 'Mathlete';
	text-align: center;

	position: absolute;
	margin: auto;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;

	cursor: default;
}
#cover_info > #title{
	font-size: 150px;
	color: #fff;
	height: 160px;
}
#cover_info > #subtitle{
	font-size: 50px;
	color: #999;
	height: 55px;
}
#cover_info > #author{
	font-size: 40px;
	color: #888;
}

#inverted_arrow_container{
	width: 100%;
	height: 0px;
	position: absolute;
	bottom: 40px;
}
#inverted_arrow{
	width:0; height:0;
	position: absolute;
	margin: auto;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
}
#inverted_arrow > div{
	position: absolute;
}
#inverted_arrow > div:nth-child(1){
	width: 960px;
	height: 40px;
	background: #fff;
	right:40px;
}
#inverted_arrow > div:nth-child(2){
	width: 0;
	height: 0;
	border-style: solid;
	border-width: 40px 0 0 40px;
	border-color: transparent transparent transparent #fff;
	right:0;
}
#inverted_arrow > div:nth-child(3){
	width: 0;
	height: 0;
	border-style: solid;
	border-width: 0 0 40px 40px;
	border-color: transparent transparent #fff transparent;
	left:0;
}
#inverted_arrow > div:nth-child(4){
	width: 960px;
	height: 40px;
	background: #fff;
	left:40px;
}