body {
 font-family: Arial, Helvetica, sans-serif;
}

a {
	color: red;
	cursor: pointer;
}

#kopfzeile {
	border-bottom: 3px solid #800000;
}

#kopfzeile:after {
  content: "";
  display: block;
  clear: both;
}

.anwendungsdiv {
	float: left;
	width: 400px;
	border: 1px solid black;
	padding: 5px;
	margin: 10px 10px 10px 0;
}