body {
  background-color: #ccffff;
}

a {
  font-size: 2em;
  border: 1px solid #33cc00;
  color: black;
  background-color: white;
}

nav {
  border: 1px solid red;
  background-color: #3366ff;
  text-align: center;
}

a:hover {
  background-color: #66ff99;
}

div {
  max-width: 850px;
  width: 100%;
  height: auto;
  background-color: white;
  padding: 15px;
  margin-left: 200px;
}
img {
  max-width: 450px;
  width: 100%;
  float: left;
  border: 10px solid white;
}

p {
  font-size: 20pt;
}

h2 {
  color: #6600cc;
}

h3 {
  color: #009900;
}

@media all and ( max-width : 600px ) {
  #holder, #header, #nav, #footer {
    display: block;
    width: 100%;
    float: none;
    margin: 0px;
    padding: 0px;
  }
div {
  
  margin-left: 0px;
}


#bild2 {
  float: right;
}

#bild3 {
  float: right;
}

#Impressum {
  text-align: center;
}