table.mapping {
  width: 100%;
}

table.mapping td {
  width: 50%;
  padding: 5px;
}

table.mapping td.hed {
  background: #606060;
  color: white;
  text-align: left;
  border-bottom: 2px #fff solid;
  font-weight: bold;
}

table.mapping td.header {
  background: #eee;
}

table.mapping td.content {
  font-family: monospace;
  padding-bottom: 15px;
}