:only-child

Baseline Widely available *

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

* Some parts of this feature may have varying levels of support.

Die :only-child CSS-Pseudoklasse repräsentiert ein Element ohne Geschwister. Dies entspricht :first-child:last-child oder :nth-child(1):nth-last-child(1), jedoch mit einer geringeren Spezifität.

Probieren Sie es aus

Syntax

css
:only-child {
  /* ... */
}

Beispiele

Grundlegendes Beispiel

HTML

html
<div>
  <div>I am an only child.</div>
</div>

<div>
  <div>I am the 1st sibling.</div>
  <div>I am the 2nd sibling.</div>
  <div>
    I am the 3rd sibling,
    <div>but this is an only child.</div>
  </div>
</div>

CSS

css
div:only-child {
  color: red;
}

div {
  display: inline-block;
  margin: 6px;
  outline: 1px solid;
}

Ergebnis

Ein Listenbeispiel

HTML

html
<ol>
  <li>
    First
    <ul>
      <li>This list has just one element.</li>
    </ul>
  </li>
  <li>
    Second
    <ul>
      <li>This list has three elements.</li>
      <li>This list has three elements.</li>
      <li>This list has three elements.</li>
    </ul>
  </li>
</ol>

CSS

css
li li {
  list-style-type: disc;
}

li:only-child {
  color: red;
  list-style-type: square;
}

Ergebnis

Spezifikationen

Specification
Selectors Level 4
# only-child-pseudo

Browser-Kompatibilität

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
:only-child
Matches elements with no parent

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support
No support
No support

Siehe auch