body {
  background-color: white;
  -ms-user-select: None;
  -moz-user-select: None;
  -webkit-user-select: None; 
}

#uebung {
  font-family: Arial;
  position: absolute;
  width: 800px;
  height: 600px;
  left: 50%;
  margin-top: 50px;
  margin-left: -400px;
}

#textfeld {
  font-family: Arial;
  position: absolute;
  width: 250px;
  height: 200px;
  font-size:120px;
  font-weight: bolder;
  margin-top: 225px;
  text-align: right;
}
#beschriftung {
  position: absolute;
    font-size:20px;
}