* {
    margin:0;
    padding:0;
  }
  head, nav {
    display: block;
  }
  html, body {
    font:100% Arial, Helvetica, sans-serif;
  }
  
  #kopfbereich {
    background-color: black;
    text-align:center;
    background: url(graphic/sunrise1.jpg) no-repeat center bottom;
    height: 150px;
  }
  #kopfbereich h1 {
    color:white;
    
    font-size:2em;
    padding:0.4em 0.4em 0 0;
  }
  #trenner {
    color:white;
    text-align: center;
    font-size:0.7em;
    background-color: #333333;
    height: 1.5em;
  }
  #steuerung  {
      color: white;
      /* background-color: silver; */
      background-image: url(graphic/grau-50.png);
      height: 1.5em;
    }
  #steuerung ul {
      list-style-type:none;
  }
  #steuerung li {
    display: inline;
    }
  #steuerung a {
    display: block;
    width: 25%; 
    /* background-color: yellow; */
    float: left;
    /* border-right: 1px solid red; */
    text-align: center;
    line-height: 1.5em;
    color: yellow;
    text-decoration: none;
  }
  #steuerung a:hover {
    background-image: url(graphic/grau-50.png);
  }
  #steuerung f1 {
    display: block;
    width: 25%; 
    background-color: white; 
    float: left;
    /* border-right: 1px solid red; */
    
    text-align: center;
    line-height: 1.5em;
    color: red;
    text-decoration: none;
  }