table.tt {
  position: relative; 
  font-size: 1.5em; 
}

table caption {
  font-weight: 600;
  text-align: center;
}

.tt tr, .tt td { position: absolute; }

.tt tr { text-align: center; }

.thead { 
  font-weight: 600;
  top: 1.5em;
}

.thead td { 
  border-bottom: 2px solid #333; 
  border-collapse: collapse;
}

.hid {
  display: none; 
}

.sent {
  border-right: 2px solid #333;
}

.even {
  float: right;
  margin: 0 20px;
}

.odd {
  float: left;
  margin: 0 20px;
}

.ttback {
  margin: 1em;
  padding: 1em;
}

.red {
  color: red;
}
.red a { color: red; }

.green {
  color: green;
}

.gray {
  color: gray;
}

.gray a { color: gray; }

.buffer {
  height: 100px; 
}