html {
	box-sizing: border-box;
}

*,
::before,
::after {
	box-sizing: inherit;
}

body {
	margin: 10px auto;
	max-width: 100em;
	font-family: sans-serif;
	color: #333333;
}

header,
nav,
nav a,
main,
article,
section,
aside,
footer {
	border-radius: 0.5em 0.5em 0.5em;
	border: 1px solid;
	padding: 10px;
	margin: 10px;
}

header {
	background: #3f6d70;
	border-color: #999999;
}

header img {
	margin-right: 50px;
	float: left;
}

nav {
	font-size: 0.91em;
	padding: 0;
	background: #3f6d70;
	border-color: #999999;
}

nav ul {
	padding: 0;
}

nav li {
	list-style: none;
	margin: 0;
	padding: 0.5em;
}

nav a {
	display: block;
	padding: 0.2em 10px;
	font-weight: bold;
	text-decoration: none;
	background-color: #f8faea;
	color: #333333;
}

nav ul a:hover,
nav ul a:active {
	color: #fffbf0;
	background-color: #006400;
}

main {
	display: block;
	background: #3f6d70;
	border-color: #999999;
	min-width: 16em;
	/* Mindestbreite (der Ueberschrift) verhindert Anzeigefehler in modernen Browsern */
}

section {
	background: #fffad5;
	border-color: slateblue;
}

article {
	background: #ffffff;
	border-color: slateblue;
}

aside {
	background: #ebf5d7;
	border-color: #999999;
}

footer {
	background: #f8faea;
	border-color: #999999;
}

footer p {
	float: right;
	margin: 0;
}

@media (min-width: 32em) {
	/* mehrspaltiges Layout für breitere Viewports */
	nav {
		float: left;
		width: 15em;
	}
	main {
		margin-left: 15em;
	}
}

p {
	text-align: justify;
	/* bedingte Silbentrennung erlauben */
	-ms-hyphens: auto;
	-webkit-hyphens: auto;
	hyphens: auto;
}
cite {
  color: #7c5f52;
}

div.table {
	display: table;
	width: calc(100% - 10px);
	border: 1px solid blue;
	padding: 5px;
}

div.zeile {
	display: table-row;
}

div.spalte {
	display: table-cell;
	border: thin solid gainsboro;
	width: 400px;
	padding: 5px;
}

figcaption {
	padding: 10px;
	text-align: center;
	color: SlateGray;
}

#toplink {
	background: aqua;
	bottom: 4em;
	margin: 0;
	padding: 0.5em;
	position: fixed;
	right: 0.5em;
}