body {
  font-family: monospace;
}
.begin {
  font-family: sans-serif;
}
td {
  border: 1px solid black;
  border-collapse: collapse;
  padding: 2px 8px;
}
table, th {
  border-collapse: collapse;
  border: 2px solid black;
}
th {
  text-align: center;
}