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---
title: ':only-child'
slug: 'Web/CSS/:only-child'
tags:
- CSS
- Layout
- Pseudo-class
- Reference
- Web
translation_of: 'Web/CSS/:only-child'
---
<div>{{CSSRef}}</div>
<p>La <a href="/en-US/docs/CSS/Pseudo-classes" title="Pseudo classes">pseudo-class </a><a href="https://developer.mozilla.org/en-US/docs/Web/CSS">CSS</a> <strong><code>:only-child</code></strong> representa un element sense germans. És el mateix que <code>:first-child:last-child</code> o <code>:nth-child(1):nth-last-child(1)</code>, però amb una menor especificitat.</p>
<pre class="brush: css no-line-numbers">/* <span id="result_box" lang="ca"><span>Selecciona cada <p>, però només si és l'únic fill del seu pare</span></span> */
p:only-child {
background-color: lime;
}</pre>
<div class="note">
<p><strong>Nota</strong>: Com es va definir originalment, l'element seleccionat havia de tenir un pare. A partir dels Selectores Nivell 4, això ja no és necessari.</p>
</div>
<h2 id="Sintaxi">Sintaxi</h2>
{{csssyntax}}
<h2 id="Exemples">Exemples</h2>
<h3 id="Exemple_bàsic">Exemple bàsic</h3>
<h4 id="HTML">HTML</h4>
<pre class="brush: html"><main>
<div>
<i>I am a lonely only child.</i>
</div>
<div>
<i>I have siblings.</i><br>
<b>So do I!</b><br>
<span>I also have siblings, <span>but this is an only child.</span></span>
</div>
</main></pre>
<h4 id="CSS">CSS</h4>
<pre class="brush: css">main :only-child {
color: red;
}
</pre>
<h4 id="Resultat">Resultat</h4>
<p>{{EmbedLiveSample('Basic_example','100%',180)}}</p>
<h3 id="Un_exemple_de_llista"><span class="short_text" id="result_box" lang="ca"><span>Un exemple de llista</span></span></h3>
<h4 id="HTML_2">HTML</h4>
<pre class="brush: html"><ol>
<li>First
<ul>
<li>This list has just one element.
</ul>
</li>
<li>Second
<ul>
<li>This list has three elements.
<li>This list has three elements.
<li>This list has three elements.
</ul>
</li>
<ol>
</pre>
<h4 id="CSS_2">CSS</h4>
<pre class="brush: css">li li {
list-style-type: disc;
}
li:only-child {
color: red;
list-style-type: square;
}</pre>
<h4 id="Resultat_2">Resultat</h4>
<p>{{EmbedLiveSample('A_list_example', '100%', 210)}}</p>
<h2 id="Especificacions">Especificacions</h2>
<table class="standard-table">
<thead>
<tr>
<th scope="col">Especificació</th>
<th scope="col">Estat</th>
<th scope="col">Comentari</th>
</tr>
</thead>
<tbody>
<tr>
<td>{{SpecName('CSS4 Selectors', '#only-child-pseudo', ':only-child')}}</td>
<td>{{Spec2('CSS4 Selectors')}}</td>
<td><span id="result_box" lang="ca"><span>No es requereix que els elements coincidents tinguin un pare.</span></span></td>
</tr>
<tr>
<td>{{SpecName('CSS3 Selectors', '#only-child-pseudo', ':only-child')}}</td>
<td>{{Spec2('CSS3 Selectors')}}</td>
<td>Definició inicial.</td>
</tr>
</tbody>
</table>
<h2 id="Navegadors_compatibles">Navegadors compatibles</h2>
<div>{{CompatibilityTable}}</div>
<div id="compat-desktop">
<table class="compat-table">
<tbody>
<tr>
<th>Descripció</th>
<th>Chrome</th>
<th>Edge</th>
<th>Firefox (Gecko)</th>
<th>Internet Explorer</th>
<th>Opera</th>
<th>Safari</th>
</tr>
<tr>
<td>Suport bàsic</td>
<td>2</td>
<td>{{CompatVersionUnknown}}</td>
<td>{{CompatGeckoDesktop(1.8)}}</td>
<td>9</td>
<td>{{CompatOpera(9.5)}}</td>
<td>3.1</td>
</tr>
<tr>
<td>No es requereix cap pare</td>
<td>{{CompatChrome(57)}}</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatOpera(44)}}</td>
<td>{{CompatUnknown}}</td>
</tr>
</tbody>
</table>
</div>
<div id="compat-mobile">
<table class="compat-table">
<tbody>
<tr>
<th>Descripció</th>
<th>Android Webview</th>
<th>Chrome for Android</th>
<th>Edge</th>
<th>Firefox Mobile (Gecko)</th>
<th>IE Mobile</th>
<th>Opera Mobile</th>
<th>Safari Mobile</th>
</tr>
<tr>
<td>Suport bàsic</td>
<td>{{CompatVersionUnknown}}</td>
<td>{{CompatVersionUnknown}}</td>
<td>{{CompatVersionUnknown}}</td>
<td>{{CompatGeckoMobile(1.8)}}</td>
<td>9</td>
<td>{{CompatOperaMobile(10)}}</td>
<td>3.1</td>
</tr>
<tr>
<td>No es requereix cap pare</td>
<td>{{CompatChrome(57)}}</td>
<td>{{CompatChrome(57)}}</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatOperaMobile(44)}}</td>
<td>{{CompatUnknown}}</td>
</tr>
</tbody>
</table>
</div>
<h2 id="Vegeu_també">Vegeu també</h2>
<ul>
<li>{{Cssxref(":only-of-type")}}</li>
<li>{{Cssxref(":first-child")}}</li>
<li>{{Cssxref(":last-child")}}</li>
<li>{{Cssxref(":nth-child")}}</li>
</ul>
|
