title: how to change background-color of external page loaded into iframe
body: <p>I try to load external page into iframe and change background-color of that page<br>
  here is the code (it is not working - it change color of parent page not iframe page):</p>
  
  <pre><code>&lt;style type="text/css"&gt;
  iframe {
      background-color: #F00;
  }
  &lt;/style&gt;
  
  &lt;iframe src="http://www.filehippo.com/" height="100%" width="100%"&gt;
  &lt;/iframe&gt;
  
  
  &lt;script src="http://code.jquery.com/jquery-1.9.1.min.js"&gt;&lt;/script&gt;
  &lt;script type="text/javascript"&gt;
  $(document).ready(function(){
      $('body').css('background-color', '#F00');
  });
  &lt;/script&gt;
  </code></pre>