table {
  border-collapse: collapse;
}

thead {
  background-color: #999;
  color: #f7f7f7;
  text-align: center;
}

th, td {
  border: 1px solid black;
  padding: 0.5rem;
}

tbody tr:nth-child(odd) {
  background-color: #fff;
}

tbody tr:nth-child(even) {
  background-color: #f7f7f7;
}

thead tr th:first-child,
tbody tr td:first-child {
  width: 8rem;
  min-width: 8rem;
  max-width: 8rem;
}