table.stack {
  border: 1px solid #000;
}

table.stack th {
  font-size: 50%;
  text-transform: uppercase;
  letter-spacing: .2em;
  background-color: #87aeb8;
}

table.stack tr.boundary {
  background-color: #bfdae1;
}

table.stack td {
  font-family: "Courier New", Courier, mono;
  font-weight: bold;
}

table.stack td.address {
  color: #888;
}

table.stack tr.boundary td.address {
  color: #000;
}