html5-hgroup和address元素

<!DOCTYPE html>
<html lang="en">
<head>
   <meta charset="UTF-8">
   <title>hgroup和address元素</title>
</head>
<body>
   <header>
   <hgroup>
       <h1>主标题</h1>
       <h2>副标题</h2>
   </hgroup>
   </header>
   <footer>
       <address>
           作者:hwd；电话：18022，地址：文安县
       </address>
   </footer>
</body>
</html>