title: select children of the first element of a certain class using XPath
body: <p>i have this type of code:</p>
  
  <pre><code>&lt;div class="content"&gt;
      &lt;p&gt;&lt;/p&gt;
      &lt;p&gt;&lt;/p&gt;
      &lt;p&gt;&lt;/p&gt;
  &lt;/div&gt;
  &lt;div class="content"&gt;
      &lt;p&gt;&lt;/p&gt;
      &lt;p&gt;&lt;/p&gt;
      &lt;p&gt;&lt;/p&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>i wish to select all <code>p</code> elements from the first element with the class <code>content</code>.
  i managed to select the first class by using:</p>
  
  <pre><code>(//div[@class="content"])[1]
  </code></pre>
  
  <p>but using <code>(//div[@class="content"])[1]/p</code> it still shows both classes</p>