:nth-of-type(2)
:nth-of-type(3)
:nth-of-type(even)
:nth-of-type(odd)
:nth-of-type(3n)
:nth-of-type(3n+1)
:nth-of-type(3n+2)
:nth-of-type(3n-1)
:nth-of-type(3n-2)
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9