html {
  height:100%;
  width:100%;
}

body {
  height:100%;
  width:100%;
  margin:0px;
  font-family:"arial";
}

#kopf {
  background-color:#34495e;
  color:white;
  display:inline-block;
  height:60px;
  width:100%;
  font-size:48px;
  padding-top:5px;
  padding-left:5px;
}

#nav a {
  float:left;
  text-decoration:none;
  color:#34495e;
  width:11.11%;
  height:30px;
  display:inline-block;
  text-align:center;
  vertical-align:middle;
  border-top:solid 5px red;
}
#nav a:hover {
  background-color:#ecf0f1;
}