.f1 {
  position: absolute;
  bottom: 0px;
  font: bold 500px Helvetica, times, serif; 
  color: #FF0000;
  opacity:0.5;
} 
.f2 {
  position: absolute; 
  bottom: 0px;
  font: bold 500px Arial, times, serif; 
  color: #0000FF;	
  opacity:0.5; 
}
.input{
  position: absolute;
  top: 0px;
}
.helvetica{
  font: bold 100% Helvetica, times, serif;
  color: #FF0000;
}
.arial{
    color: #0000FF;
  font: bold 100% Arial, times, serif;
}