This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.


The :-moz-first-node CSS pseudo-class represents any element that is the first child node of some other element. It differs from :first-child because it does not match a first child element with (non-whitespace) text before it.

Any white space at the start of an element is ignored for the determination of :-moz-first-node.


span:-moz-first-node { style properties }



span:-moz-first-node {
  background-color: lime;



See also

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 Contributors to this page: Sebastianz, teoli, Sheppy, Marsf, Fredchat, DBaron, Mw22
 Last updated by: Sebastianz,