Added a link with rel=contents.

Author: bert-github

css3-box/Overview.src.html

@@ -9,6 +9,7 @@
   ol.stack p {margin-top: 0}
 </style>
 
+<link rel=contents href="#contents">
 <link href="../default.css" rel="stylesheet"
   title="Default" type="text/css">
 <link href="http://www.w3.org/StyleSheets/TR/W3C-MO.css" rel="stylesheet"