: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.
Die CSS-:only-child
-Pseudoklasse repräsentiert ein Element ohne Geschwister. Dies ist dasselbe wie :first-child:last-child
oder :nth-child(1):nth-last-child(1)
, aber mit einer geringeren Spezifität.
Probieren Sie es aus
Syntax
css
:only-child {
/* ... */
}
Beispiele
Einfaches 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
BCD tables only load in the browser