title: Move one element before another with css/html
body: <p>Is it possible to "move" one full width element that is below another one so that it appears to be above by only using CSS/HTML? (and not changing the markup order)</p>
  
  <pre><code>&lt;div id="first"&gt;first&lt;/div&gt;
  &lt;div id="second"&gt;second&lt;/div&gt;
  
  #first {…}
  #second {…}
  </code></pre>
  
  <p>Desirable result:</p>
  
  <pre>
  second
  first
  </pre>