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+---
+title: Selector ID
+slug: Web/CSS/Selectors_ID
+tags:
+  - CSS
+  - Reference
+  - Selectors
+translation_of: Web/CSS/ID_selectors
+---
+<div>{{CSSRef}}</div>
+
+<p><span id="result_box" lang="ca"><span>En un document HTML, el</span></span> <strong>selector</strong> <strong>ID </strong> <span id="result_box" lang="ca"><span>CSS coincideix amb un element basat en el valor del seu atribut</span></span> {{htmlattrxref("ID")}}. <span id="result_box" lang="ca"><span>L'atribut</span></span> <code>ID</code> <span id="result_box" lang="ca"><span>de l'element seleccionat ha de coincidir exactament amb el valor indicat en el selector</span></span></p>
+
+<pre class="brush: css no-line-numbers">/* The element with id="demo" */
+div#demo {
+  border: red 2px solid;
+}</pre>
+
+<h2 id="Sintaxi">Sintaxi</h2>
+
+<pre class="syntaxbox">#id_value { <em>style properties</em> }</pre>
+
+<p><span class="short_text" 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">[id=id_value] { <em>style properties</em> }</pre>
+
+<h2 id="Exemple">Exemple</h2>
+
+<h3 id="CSS">CSS</h3>
+
+<pre class="brush: css">div#identified {
+  background-color: skyblue;
+}
+</pre>
+
+<h3 id="HTML">HTML</h3>
+
+<pre class="brush: html">&lt;div id="identified"&gt;This div has a special ID 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", "#id-selectors", "ID selectors")}}</td>
+   <td>{{Spec2("CSS4 Selectors")}}</td>
+   <td> </td>
+  </tr>
+  <tr>
+   <td>{{SpecName("CSS3 Selectors", "#id-selectors", "ID selectors")}}</td>
+   <td>{{Spec2("CSS3 Selectors")}}</td>
+   <td> </td>
+  </tr>
+  <tr>
+   <td>{{SpecName("CSS2.1", "selector.html#id-selectors", "ID selectors")}}</td>
+   <td>{{Spec2("CSS2.1")}}</td>
+   <td> </td>
+  </tr>
+  <tr>
+   <td>{{SpecName("CSS1", "#id-as-selector", "ID 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>