tr.even, td.even, span.even {
  background-color: #ECECCC;
  color: black;
  visibility: visible;
}

td.invisibleeven, span.invisibleeven {
  background-color: #ECECCC;
  color: black;
  visibility: hidden;
}

tr.odd, td.odd, span.odd {
  background-color: white;
  color: black;
}

td.invisibleodd, span.invisibleodd {
  background-color: white;
  color: black;
  visibility: hidden;
}