.leer{
  background-color: white;
  border:1px white;
  overflow:hidden;
  vertical-align:top;
}

table.orange_gruen td, table.orange_gruen th {
  padding: 2px 10px; 
  text-align: center
/*  border: 1px solid #000; */
}
table.orange_gruen th {
  background-color: #666;
  color: #fff;
}

table.orange_gruen tr:nth-child(1n+2) {
  background-color: #ccffcc;
  color: #000;
}
table.orange_gruen tr:nth-child(2n+1) {
  background-color: #fff5dd;
  color: #000;
}
table.orange_gruen tr:hover {
  background-color: #c00;
  color: #fff;
}