skip second child css code example

Example 1: css last 3 childs

#something a:nth-last-child(-n+3) {
    /*declarations*/
}

Example 2: how select two nt child with css

//Separate the classes with a comma ,

.ListTaskTime tbody tr >td:nth-child(3), 
.ListTaskTime tbody tr >td:nth-child(6),
.ListTaskTime tbody tr >td:nth-child(9) {
    /* Common Styles Goes Here, Styles will apply to child 3,6 and 9 */
}