title: HTML5 empty elements
body: <p>By empty I mean the following:</p>
  
  <pre><code>&lt;link rel="stylesheet" href="reset.css" type="text/css" /&gt;
  </code></pre>
  
  <p>Been using XHTML transitional for several years now - and to validate properly the trailing <code>/&gt;</code> is required for elements that do not contain other elements. Is this required for a valid HTML5 document? </p>