W3School TIY Editor

<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href="http://code.jquery.com/mobile/1.3.2/jquery.mobile-1.3.2.min.css">
<script src="http://code.jquery.com/jquery-1.8.3.min.js"></script>
<script src="http://code.jquery.com/mobile/1.3.2/jquery.mobile-1.3.2.min.js"></script>
</head>
<body>

<p>多行的三列布局：</p>
   <div class="ui-grid-b">
     <div class="ui-block-a" style="border: 1px solid black;"><span>Some Text</span></div>
     <div class="ui-block-b" style="border: 1px solid black;"><span>Some Text</span></div>
     <div class="ui-block-c" style="border: 1px solid black;"><span>Some Text</span></div>
     <div class="ui-block-a" style="border: 1px solid black;"><span>Some Text</span></div>
     <div class="ui-block-b" style="border: 1px solid black;"><span>Some Text</span></div>
     <div class="ui-block-a" style="border: 1px solid black;"><span>Some Text</span></div>
   </div>
  </div>
</div>

</body>
</html>