title: How to add CSS to iframe content
body: <p>Why this not working browsers except IE?</p>
  
  <pre><code>var head = jQuery("#frame1").contents().find("head");
  var css = '&lt;style type="text/css"&gt;' +
        '.container{background:blue}; ' +
        '&lt;/style&gt;';
  jQuery(head).append(css);     
  });
  </code></pre>