files/pt-br/web/css/id_selectors/index.html


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---
title: Seletores de ID
slug: Web/CSS/ID_selectors
tags:
  - Beginner
  - CSS
  - CSS Reference
  - Iniciante
  - Referencia
  - Referencia CSS
  - Selectors
  - Seletores
translation_of: Web/CSS/ID_selectors
---
<div>{{CSSRef("Selectors")}}</div>

<p>Em um documento HTML, os seletores de ID do CSS selecionam um elemento baseado no conteúdo de seu atributo {{htmlattrxref("ID")}},  o qual deve ser exatamente igual ao valor dado ao seletor.</p>

<h2 id="Sintaxe">Sintaxe</h2>

<pre class="syntaxbox">#valor_id { <em>propriedades de estilo</em> }</pre>

<p>Note que isso é equivalente aos seguintes {{Cssxref("Attribute_selectors", "seletores de atributo")}}:</p>

<pre class="syntaxbox">[id=valor_id] { <em>propriedades de estilo</em> }</pre>

<h2 id="Exemplo">Exemplo</h2>

<pre class="brush: css">span#identificado {
  background-color: DodgerBlue;
}
</pre>

<pre class="brush: html">&lt;span id="identificado"&gt;Aqui um span com um pouco de texto.&lt;/span&gt;
&lt;span&gt;Aqui outro.&lt;/span&gt;
</pre>

<p>{{EmbedLiveSample("Exemplo", 200, 50)}}</p>

<h2 id="Especificações">Especificações</h2>

<table class="standard-table">
 <thead>
  <tr>
   <th scope="col">Especificação</th>
   <th scope="col">Status</th>
   <th scope="col">Comentário</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>Definição inicial</td>
  </tr>
 </tbody>
</table>

<h2 id="Browser_compatibility">Compatibilidade com navegadores</h2>

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

<div id="compat-desktop">
<table class="compat-table">
 <tbody>
  <tr>
   <th>Recurso</th>
   <th>Chrome</th>
   <th>Firefox (Gecko)</th>
   <th>Internet Explorer</th>
   <th>Opera</th>
   <th>Safari</th>
  </tr>
  <tr>
   <td>Suporte básico</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>Recurso</th>
   <th>Android</th>
   <th>Chrome for Android</th>
   <th>Firefox Mobile (Gecko)</th>
   <th>IE Mobile</th>
   <th>Opera Mobile</th>
   <th>Safari Mobile</th>
  </tr>
  <tr>
   <td>Suporte básico</td>
   <td>{{CompatUnknown}}</td>
   <td>{{CompatUnknown}}</td>
   <td>{{CompatUnknown}}</td>
   <td>{{CompatUnknown}}</td>
   <td>{{CompatUnknown}}</td>
   <td>{{CompatUnknown}}</td>
  </tr>
 </tbody>
</table>
</div>