index.css

@font-face {
	font-family: 'inconsolata';
	src: url('files/inconsolata.woff') format('woff');
	font-weight: normal;
	font-style: normal;
}

* {
	box-sizing: border-box;
}

html {
	height: 100%;
}

body {
	background-color: #ffffff;
	margin: 0px;
	height: 100%;
	color: #555;
	font-family: 'inconsolata';
	font-size: 15px;
	line-height: 18px;
	overflow: hidden;
}

h1 {
	margin-top: 30px;
	margin-bottom: 40px;
	font-size: 25px;
	font-weight: normal;
}

h2 {
	color: #454545;
	font-size: 18px;
	font-weight: normal;

	margin-top: 20px;
}

h3 {
	color: #666;
	font-size: 16px;
	font-weight: normal;

	margin-top: 20px;
}

a {
	color: #2194CE;
	text-decoration: none;
}

#panel {
	position: fixed;
	left: 0px;
	width: 260px;
	height: 100%;
	overflow: auto;
	padding: 0px 20px 0px 20px;
	background: #fafafa;
}

#panel ul {
	list-style-type: none;
	padding: 0px;
}

iframe {
	position: absolute;
	border: 0px;
	left: 260px;
	width: calc(100% - 260px);
	height: 100%;
	overflow: auto;
}

.filterBlock {
	position: relative;
}

.filterBlock p {
	margin: 0;
}

#filterInput {
	width: 100%;
	padding: 5px;
	font-family: inherit;
	font-size: 15px;
	outline: none;
	border: 1px solid #dedede;
}

#filterInput:focus{
	border: 1px solid #2194CE;
}

#clearFilterButton {
	position: absolute;
	right: 6px;
	top: 50%;
	margin-top: -8px;
	width: 16px;
	height: 16px;
	font-size: 14px;
	color: grey;
	text-align: center;
	line-height: 0;
	padding-top: 7px;
	opacity: .5;
}

#clearFilterButton:hover {
	opacity: 1;
}

.hidden {
	display: none;
}

#panel li b {
	font-weight: bold;
}

/* mobile */

#expandButton {
	display: none;
	position: absolute;
	right: 20px;
	top: 12px;
	width: 32px;
	height: 32px;
}

#expandButton span {
	height: 2px;
	background-color: #2194CE;
	width: 16px;
	position: absolute;
	left: 8px;
	top: 10px;
}

#expandButton span:nth-child(1) {
	top: 16px;
}

#expandButton span:nth-child(2) {
	top: 22px;
}

@media all and ( max-width: 640px ) {

	h1 {
		margin-top: 20px;
		margin-bottom: 20px;
	}

	#panel {
		position: absolute;
		left: 0;
		top: 0;
		height: 100%;
		width: 100%;
		right: 0;
		z-index: 100;
		overflow: hidden;
		border-bottom: 1px solid #dedede;
	}

	#content {
		position: absolute;
		left: 0;
		top: 120px;
		right: 0;
		bottom: 0;
		font-size: 17px;
		line-height: 22px;
		padding-left: 20px;
		overflow: auto;
	}

	#navigation {
		position: absolute;
		left: 0;
		top: 90px;
		right: 0;
		bottom: 0;
		font-size: 17px;
		line-height: 22px;
		overflow: auto;
	}

	iframe {
		position: absolute;
		left: 0;
		top: 56px;
		width: 100%;
		height: calc(100% - 56px);
	}

	#expandButton {
		display: block;
	}

	#panel.collapsed {
		height: 56px;
	}

}