---
title: Selector Class
slug: Web/CSS/Selectors_de_Classe
tags:
  - CSS
  - Reference
  - Selectors
translation_of: Web/CSS/Class_selectors
---
<div>{{CSSRef}}</div>

<p>El <strong>selector class </strong> CSS <span id="result_box" lang="ca"><span>coincideix amb elements basats en el contingut de l'atribut</span></span> {{htmlattrxref("class")}}.</p>

<pre class="brush: css no-line-numbers">/* Tots els elements amb class="spacious" */
.spacious {
  margin: 2em;
}

/* Tots els elements &lt;li&gt; amb class="spacious" */
li.spacious {
  margin: 2em;
}</pre>

<h2 id="Sintaxi">Sintaxi</h2>

<pre class="syntaxbox">.classname { <em>style properties</em> }</pre>

<p><span id="result_box" lang="ca"><span>Recordeu que</span> <span>això és</span> <span>equivalent al</span> <span>següent</span></span> {{Cssxref("Attribute_selectors", "attribute selector")}}:</p>

<pre class="syntaxbox">[class~=classname] { <em>style properties</em> }</pre>

<h2 id="Exemple">Exemple</h2>

<h3 id="CSS">CSS</h3>

<pre class="brush: css">div.classy {
  background-color: skyblue;
}
</pre>

<h3 id="HTML">HTML</h3>

<pre class="brush: html">&lt;div class="classy"&gt;This div has a special class on it!&lt;/div&gt;
&lt;div&gt;This is just a regular div.&lt;/div&gt;
</pre>

<h3 id="Resultat">Resultat</h3>

<p>{{EmbedLiveSample('Example', '100%', 50)}}</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', '#class-html', 'class selectors')}}</td>
   <td>{{Spec2('CSS4 Selectors')}}</td>
   <td>Sense canvis</td>
  </tr>
  <tr>
   <td>{{SpecName('CSS3 Selectors', '#class-html', 'class selectors')}}</td>
   <td>{{Spec2('CSS3 Selectors')}}</td>
   <td> </td>
  </tr>
  <tr>
   <td>{{SpecName('CSS2.1', 'selector.html#class-html', 'child selectors')}}</td>
   <td>{{Spec2('CSS2.1')}}</td>
   <td> </td>
  </tr>
  <tr>
   <td>{{SpecName('CSS1', '#class-as-selector', 'child selectors')}}</td>
   <td>{{Spec2('CSS1')}}</td>
   <td>Definició inicial</td>
  </tr>
 </tbody>
</table>

<h2 id="Navegadors_compatibles">Navegadors compatibles</h2>

<p>{{CompatibilityTable}}</p>

<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>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
  </tr>
 </tbody>
</table>
</div>

<div id="compat-mobile">
<table class="compat-table">
 <tbody>
  <tr>
   <th>Descripció</th>
   <th>Android</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>{{CompatUnknown}}</td>
   <td>{{CompatUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatUnknown}}</td>
   <td>{{CompatUnknown}}</td>
   <td>{{CompatUnknown}}</td>
   <td>{{CompatUnknown}}</td>
  </tr>
 </tbody>
</table>
</div>