style.css

html, body {
	height: 100%;
}

body {
	background: #ffffff;
	background: -moz-radial-gradient(center, ellipse cover,  #ffffff 0%, #cccccc 100%);
	background: -webkit-gradient(radial, center center, 0px, center center, 100%, color-stop(0%,#ffffff), color-stop(100%,#cccccc));
	background: -webkit-radial-gradient(center, ellipse cover,  #ffffff 0%,#cccccc 100%);
	background: -o-radial-gradient(center, ellipse cover,  #ffffff 0%,#cccccc 100%);
	background: -ms-radial-gradient(center, ellipse cover,  #ffffff 0%,#cccccc 100%);
	background: radial-gradient(ellipse at center,  #ffffff 0%,#cccccc 100%);
	filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#ffffff', endColorstr='#cccccc',GradientType=1 );
	color: #000;
	font-size: 10px;
	font-family: Arial, Helvetica, sans-serif;
	line-height: 1em;
}

#page,
#target {
	position: absolute;
	left: 0;
	width: 30%;
	max-width: 400px;
	height: auto;
	z-index: 2;
	padding: 2%;
	display: none;
	transition: background-color 0.5s, color 0.5s;
}

#page {
	top: 0;
}

#target {
	bottom: 0;
}

#page h1,
#target h1 {
	font-family: 'Advent Pro', sans-serif;
	font-size: 1.8em;
	line-height: 1.2em;
}

#page p,
#target p {
	font-size: 1.2em;
	line-height: 1.4em;
}

#page:hover {
	background: rgba( 0, 0, 0, 0.8 );
	color: #FFF;
}

.collection {
	width: 100%;
	height: 100%;
	position: relative;
	z-index: 1;
}

.graph {
	width: 100%;
	height: 100%;
	position: absolute;
	top: 0;
	left: 0;
	display: none;
	z-index: 1;
}

.graph .node {
	width: 16px;
	height: 16px;
	position: absolute;
	margin: -8px 0 0 -8px;
	left: 50%;
	top: 50%;
	transition: margin-left 0.5s, margin-top 0.5s;
	-moz-transition: margin-left 0.5s, margin-top 0.5s;
	-webkit-transition: margin-left 0.5s, margin-top 0.5s;
	z-index: 1;
}

.graph .node a {
	display: block;
	width: 16px;
	height: 16px;
	overflow: hidden;
	color: transparent;
	background: #000;
	border-radius: 8px;
	-moz-border-radius: 8px;
	-webkit-border-radius: 8px;
	transition: background-color 0.5s;
	-moz-transition: background-color 0.5s;
	-webkit-transition: background-color 0.5s;
}

.graph .node.origin a {
	background: #900;
	z-index: 2;
}

.graph .node a:hover {
	background: #666;
}