/* Selects the second <li> element in a list */
li:nth-child(2) {
color: lime;
}
/* Selects every fourth element
among any group of siblings */
:nth-child(4n) {
color: lime;
}
p:nth-child(2)
{
background: red;
}
:nth-child(1) { /*advantage is you can do it for 2nd, 3rd etc. */
/* styles go here*/
}:nth-child(3) { //the number is the child number you are targeting
//styles here
}/* Select the first list item */
li:nth-child(1) { }
/* Select odd list items */
li:nth-child(odd) { }
/* Select even list items */
li:nth-child(even) { }
/* Select each list item every 3 (3,6,9...) */
li:nth-child(3n) { }
/* Select each list item every 3 starting from the fourth (4,7,10...) */
li:nth-child(3n+1) { }:nth-child()