nth-child with mod (or modulo) operator

Question

Is it possible to use the nth-child with modulo? I know you can specify a formula, such as

nth-child(4n+2)

But I can\'t seem t

Answer 1

If you want modulous with n=2 than you can use even or odd.

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