nth: style css code example
Example 1: css odd even child
tr:nth-child(even) {background: #CCC}
tr:nth-child(odd) {background: #FFF}
Example 2: child css
p:nth-child(2)
{
background: red;
}
Example 3: select odd child css
li:nth-child(odd) { /* Selects only odd elements */
color: green;
}