body {
  background-color: #FFFFFF;
}
h1 {
  color: black;
  text-align: center;
  margin-bottom: 0px;
}
p {
  color: black;
  line-height: 150%;
  text-align: center;
}
p.untertitel {
  margin-top: 0px;
  line-height: 100%;
  margin-left: 0px;
  text-align: center;
  font-size: 80%;
  margin-bottom: 40px;
}

div.nav {
  width: 100%;
  margin-top: 2em;
}
div.btnZurueck {
  float: left;
  width: 20%;
  padding: 10px;
  background: #F7F7F7;
  box-sizing: border-box;  
  text-align: left;
  color: #555555;
}
div.btnWeiter {
  float: right;
  width: 20%;
  padding: 10px;
  background: #F7F7F7;
  box-sizing: border-box;  
  text-align: right;
  color: #555555;
}
div.navPage {
  float: left;
  width: 60%;
  text-align: center;
  align-content: center;
}
div.navKapitel {
  float: inherit;
  width: 12.28%;
  padding: 10px;
  margin-left: 1%;
  margin-right: 1%;
  background: #F7F7F7;
  box-sizing: border-box;  
  text-align: center;
  color: #555555;
}
div.navKapitelAktiv {
  float: inherit;
  width: 12.28%;
  padding: 10px;
  margin-left: 1%;
  margin-right: 1%;
  background: #F7F7F7;
  box-sizing: border-box;  
  text-align: center;
  color: black;
  font-weight: bold;
}

div.main {
  width: 70%;
  margin: auto;
}

img.zwerke {
  width: 100%;
}