/* CSS Document */
body {
    background-image:  url(file:///L|/GB/Ablage/hg-blaetter.jpg);
}
 
.boxgroesse {
  width: 250px;
  height: 145px;
  font-size: 30pt;
  color: white;
  opacity: 0.25;
}
 
#box1 {
    background-color: red;
    position: absolute;
    top: 20px;
    left: 10px;
}
 
#box2 {
    background-color: green;
    position: absolute;
    top: 70px;
    left: 300px;
}
 
#box3 {
    background-color: blue;
    position: absolute;
    top: 210px;
    left: 200px;
}