.colorbox {
  margin: auto;
  width: 70%;
  border: 1px solid #000000;
  padding: 10px;
  text-align: center;
background: url(../bilder/box-background2.png);
background-size: 100%;
border-radius: 20px;

}
body {   
  font-family: arial;
  background-image: url("../bilder/background2.gif");
  background-repeat: repeat;
  background-image: size 100%;
  }

audio {width: 95%;}