title: Are parentheses allowed in CSS selectors?
body: <p>In the below example, I want to create a CSS rule that applies only to the header with the text "Blockhead".</p>
  
  <pre><code> &lt;div class="gumby"&gt;
       &lt;span class="pokey"&gt;&lt;/span&gt;
       &lt;h3&gt;Blockhead&lt;/h3&gt;
       &lt;h3&gt;Clay rules&lt;/h3&gt;
   &lt;/div&gt;
  </code></pre>
  
  <p>Can I use parentheses, such as <code>(.gumby &gt; .pokey) + h3</code>?  If not, what is my alternative?</p>