body {
  font-family: Verdana, sans-serif;
}
h1 {
  font-size: 120%;
}
table tr th {
  border: 1px solid white;
}
table tr th:first-child {
  border-bottom-color: black;
}
table tr:first-child th {
  border-right-color: black;
}
table tr td {
  border: 1px dotted #CCC;
  width: 5ex;
  padding: 2px 5px;
}