h1 {
	font-size: 150%;
}
h2 {
	font-size: 140%;
}
h3 {
	font-size: 130%;
}
h4 {
	font-size: 120%;
}
h5 {
	font-size: 110%;
}

h1, h2, h3, h4, h5 {
	font-variant: small-caps;
}

html {
	font-family: "Linux Libertine", serif;
	font-size: 1.2em;
	line-height: 150%;
	justify-content: center;
	display: flex;
}

body {
	max-width: 40em;
	width: 40em;
}

a {
	text-decoration: none;
}

img {
	width: 100%;
}

/* navigation */

nav {
	font-family: "Linux Libertine", serif;
	width: 100%;
	font-weight: bold;
	font-size: 100%;
	font-variant: small-caps;
	display: inline-block;
	justify-content: space-between;
	border-bottom: 2px solid black;
}

nav ul {
	list-style-type: none;
	padding: 0;
}

nav li {
	display: inline-block;
	border: 2px solid black;
	padding: 0.2em;
	margin: 0.2em;
}

header a,
nav a {
	color: #000;
	text-decoration: none;
	padding: 0.2em;
}

header a:hover,
nav a:hover {
	color: #000;
	background-color: #e6e6e6;
}

header a:visited,
nav a:visited {
	color: #000;
}

/* header */

header {
	font-family: "Linux Libertine", serif;
	width: 100%;
	font-weight: bold;
	font-size: 100%;
	font-variant: small-caps;
}

header div {
	display: inline-block;
	vertical-align: middle;
}

header div img {
	height: 10rem;
}

/* footer */

footer {
	padding-top: 1rem;
	border-top: 2px solid black;
	text-align: center;
	font-size: 80%;
}

/* video */

.video-container {
	width: 100%;
	aspect-ratio: 16 / 9;
}

.video-container iframe {
	width: 100%;
	height: 100%;
}