title: CSS Cascading HTML5 <header> <nav> elements - How?
body: <p>Example:</p>
  
  <pre><code>&lt;header&gt;
    &lt;nav&gt;
      &lt;ul&gt;...&lt;/ul&gt;
    &lt;/nav&gt;
  &lt;/header&gt;
  </code></pre>
  
  <p>CSS:</p>
  
  <pre><code>header nav { ... } /* does not work */
  </code></pre>
  
  <p>Is there any way possible?</p>