Add nth of type css

For anyone stumbling onto this topic in the future, to apply different styles to alternate elements use the :nth-child pseudo class. For example:

/* Odd posts */
.recently li:nth-child(odd) {
    background-color: #ffffff;
}

/* Even posts */
.recently li:nth-child(even) {
    background-color: #eeeeee;
}

Also, please note that this selector won’t work on outdated browsers such as IE6-8.