container {
  display: flex;
}

table {
  width: 70%;
}

table,
th,
td {
  border: solid black 1px;
  border-collapse: collapse;
}

.highlight {
  background-color: lightgoldenrodyellow;
}
/* from table element's table class on 8th child th element and add 1 each time */
table.table th:nth-child(1n + 9) {
  background-color: lightgoldenrodyellow;
}
table.table td:nth-child(1n + 9) {
  background-color: lightgoldenrodyellow;
}