BODY {
  font-size: 24px; 
}

INPUT.but {
  background-color: #FFFFFF;
  color: #000000;
  font-size: 24px; 
  margin-left: 0px;
  margin-right: 0px;
}

INPUT.let {
  background-color: #FFFFFF;
  color: #000000;
  font-size: 24px; 
  margin-left: 0px;
  margin-right: 0px;
}

SPAN.col1 {
  background-color: #FFFFFF;
  color: #FF0000;
  font-size: 24px; 
  margin-left: 0px;
  margin-right: 0px;
}

SPAN.col2 {
  background-color: #000000;
  color: #FFFF00;
  font-size: 24px; 
  margin-left: 0px;
  margin-right: 0px;
}

SPAN.col3 {
  background-color: #FFFFFF;
  color: #00FF00;
  font-size: 24px; 
  margin-left: 0px;
  margin-right: 0px;
}

SPAN.col4 {
  background-color: #FFFFFF;
  color: #0000FF;
  font-size: 24px; 
  margin-left: 0px;
  margin-right: 0px;
}