:-moz-first-node

Non-standard: This feature is not standardized. We do not recommend using non-standard features in production, as they have limited browser support, and may change or be removed. However, they can be a suitable alternative in specific cases where no standard option exists.

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The :-moz-first-node CSS pseudo-class is a Mozilla extension that 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.

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

Syntax

css
:-moz-first-node {
  /* ... */
}

Examples

CSS

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

HTML

html
<p>
  <span>This matches!</span>
  <span>This doesn't match.</span>
</p>

<p>
  Blahblah.
  <span>This doesn't match because it's preceded by text.</span>
</p>

Result

Specifications

Not part of any standard.

Browser compatibility

See also