body {
  background-color: black;
  font-family: Arial,Helvetica,sans-serif;
  color: yellow;
  width: 711px;
  margin-right: auto;
  margin-left: auto;
}
div {
  text-align: center;
}
a {
  text-decoration: none;
  color: yellow;
}
h1 {
  line-height: 1.2em;
  font-size: 0.8em;
  font-weight: normal;
}
h2 {
  font-size: 1em;
  line-height: 0.8;
}
h3 {
  font-size: 1.3em;
  line-height: 1.3em;
}
h4 {
  font-size: 1.4em;
  line-height: 1.4em;
}
h5 {
  font-size: 1.5em;
  line-height: 1.5em;
}
h6 {
  font-size: 0.6em;
  line-height: 0em;
}
a:hover {
  color: #663300;
}
a.oben {
  color: red;
}