session.css

* {
	box-sizing: border-box;
}

body {
	color: #333;
	font-family: "Helvetica Neue",Helvetica,Arial,sans-serif;
	padding: 0 3%;
}

h1 {
	font-size: 1.8em;
	margin: 0.5em 0;
	color: #468850;
}

h3 {
	margin: 0.8em 0 0.4em;
	font-size: 1.4em;
	border-bottom: 1px solid #79bb83;
	padding-bottom: 0.2em;
}

p {
	line-height: 1.4em;
}

ul {
	margin-top: 1em;
}

.authors {
	list-style: none;
	padding: 0;
}

.authors li {
	display: inline-block;
	margin-left: 1em;
	margin-bottom: 1em;
}

.authors li:last-child {
	margin-bottom: 0;
}

.authors img {
	vertical-align: middle;
	margin-right: 1em;
}

.authors h2 {
	font-size: 1.2em;
	display: inline-block;
}

.categories li {
	border: 1px solid #CCC;
	padding: 0.2em;
	text-align: center;
	margin-top: 0.1em;
}

.tags {
	text-align: center;
	margin-bottom: 1em;
	font-size: 0.9em;
}

.tags li{
	background-color: #468850;
	color: #DDD;
	display: inline-block;
	padding: 0.5em;
	margin: 0.2em 0.2em 0 0;
	border-radius: 0.5em;
}

@media (min-width: 768px) {
	body {
		padding: 0;
	}

	.session {
		border: 1px solid #ccc;
		box-shadow: 0.5em 0.5em #ddd;
		margin: 1em auto;
		padding: 1em;
		width: 750px;
		overflow: auto;
	}

	section {
		width: 75%;
		float: left;
	}

	aside {
		width: 20%;
		float: right;
	}
}