body {
	font-family: sans-serif;
	margin: 0;
	overflow: hidden;
}

nav {
	position: fixed;
	top: 0;
	left: 0;
	right: 0;
	text-align: center;
}

nav > a {
	color: rgba(255, 255, 255, 0.5);
	margin: 0 4px 0 4px;
}

#progress {
	position: fixed;
	background-color: white;
	top: 0;
	left: 0;
	height: 5px;
	opacity: 1;
	transition: opacity 1s;
}

#progress.finish {
	opacity: 0;
}

div.description {
	display: none;
	width: 356px;
	height: 257px;
	background-color: white;
	box-shadow: 0px 0px 6px gray;
	overflow: scroll;
}

div.description > *:not(iframe) {
	margin: 5px;
}