title: Use rowspan attribute in <style> tag
body: <p>I would like to use rowspan(html's attribute) in <code>&lt;style&gt;</code>, like:</p>
  
  <pre><code>   &lt;style&gt;
       table td{
         rowspan: 2;
       }
      &lt;/style&gt;
  </code></pre>
  
  <p>Is there anyway to do that, or anything to solve that ?
  Thank for any suggestions !</p>