See http://www.w3.org/TR/selectors/.
http://www.w3.org/TR/selectors/#structural-pseudos
See https://css-tricks.com/almanac/selectors/n/nth-of-type/
:eq()
is a jQuery extension and not part of the CSS specification.
See http://www.w3.org/TR/selectors/.
http://www.w3.org/TR/selectors/#structural-pseudos
See https://css-tricks.com/almanac/selectors/n/nth-of-type/
:eq()
is a jQuery extension and not part of the CSS specification.