官方网站
http://www.qq.com/404/
我的demo
<html> <head> <meta http-equiv="content-type" content="text/html;charset=utf-8;"/> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" /> <meta name="robots" content="all" /> <meta name="robots" content="index,follow"/> </head> <body> <script type="text/javascript" src="https://www.qq.com/404/search_children.js" charset="utf-8" homePageUrl="gdutxiaoxu.github.io" homePageName="回到我的主页"> </script> </body> </html>
原文：http://www.cnblogs.com/CyLee/p/6164019.html