title: Stray start tag Error
body: <p>I have the following code</p>
  
  <pre><code>&lt;!DOCTYPE html&gt;
  &lt;html&gt;
      &lt;head&gt;
          &lt;title&gt;site title&lt;/title&gt;
      &lt;/head&gt;
      &lt;body&gt;
      &lt;/body&gt; 
  &lt;/html&gt;
  </code></pre>
  
  <p>firefox inform that "stray start tag <code>&lt;html&gt;</code>" , "stray start tag <code>&lt;head&gt;</code>" , "stray end tag <code>&lt;head&gt;</code>" and "An body start tag seen but an element of the same type was already open"</p>
  
  <p>how can I solve this?</p>
  
  <p>please help</p>