table {
  border-collapse: collapse;
}

th, td {
  border: 1px solid black;
  padding: 8px;
  text-align: center;
  vertical-align: middle;
  font-weight: bold;
  font-size: 30px;
}

body {
  padding: 15px;
  font-weight: bold;
  font-size: 30px;
}