a:link    { 
  color: #fff;
  text-decoration: none;
}

a:visited { 
  color: #fff; 
  text-decoration: none;
}

a:hover   { 
  color: #ff9; 
  text-decoration: none;
}

a:active  { 
  color: #fd3; 
  text-decoration: none;
}


.body {
  text-align: center;  /* wegen alter IEs */
  background-image: url("bilder/hintergrund.jpg");
  background-color: #000033;
}

.box_seitenbereich {
  text-align: left;    /* wegen alter IEs */
  margin: 0 auto;      /* Zentrierung mitte */
  width: 800px;

}

.box_kopfzeile {
  background-color: lightskyblue;
  border-bottom: silver;
}

.box_kopfzeile_mit_logo {
  background-image: url("bilder/Logo.jpg");
  background-repeat: no-repeat;
  background-position: center top;
  height: 150px;
  padding: 8px;       /* Abstand nach unten */
  margin-top: 2px; 
}

.box_fusszeile {
  clear: both;
  border-top: 2px solid white;
  margin-top: 1em;
  text-align: right;
  font-size: 18;
  color: #FFFFFF;
  height: 10%;
}

.box_navi {
  float: left;
  width: 170px;
  height: 600px;
  background-image: url("bilder/farbverlaufNavigation.png");
  background-repeat: repeat-y;
  text-align: left;
}                          

.box_inhalte_top {
  margin-left: 12em;
  text-align: left;
  border-bottom: 2px solid white;
  font-size: 1.6em;
  color: #FFFFFF;
  padding: 0;
  margin-left: 7.6em;
  margin-bottom: 1.5em;
}
.h1 {
  text-align: left;
  font-size: 2em;
  color: #FFFFFF;
  }

.box_inhalte {
  margin-left: 12em;
  text-align: center;
}

.box_inhalte_demos {
  margin-left: 12em;
  text-align: left;

}
.box_inhalte-ref {
  margin-left: 15em;
  text-align: left;

}

.box_navi ul {
  list-style: none;   /* keine Aufzählungspunkte */
  margin:  0;
  padding: 12px; 
}

.box_navi li {
  font-size: 1.6em;
  color: #FFFFFF;
  padding-top:    8px;
  padding-left:   0px;
  padding-bottom: 8px;
  padding-right:  0px;
  
}

.bild_rechts {
  margin-left: 12em;
  text-align: center;
  float: left;
}

.bild_links {
  margin-left: 12em;
  text-align: center;
  float: left;
}

.bilderbox {

  width: 200px;
  margin-top: 30px;
  margin-left: 35px;
  margin-right: 35px;
  height: 250px;
  float: left;
}