原：
<!DOCTYPE html PUBLIC " -//W3C//DTD XHTML 1.0 Transitional//EN " " http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd "> <html xmlns= " http://www.w3.org/1999/xhtml "> <head> <meta http-equiv= " X-UA-Compatible " content= " IE=edge " /> <meta http-equiv= " Content-Type " content= " charset=utf-8 " /> <title>分发服务</title> <link href= " css/style.css " rel= " stylesheet " type= " text/css " /> <script type= " text/javascript " src= " js/jquery-3.0.0.min.js "></script> <script type= " text/javascript " src= " js/jquery.idTabs.min.js "></script>
</head>
改：<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
改为<!DOCTYPE>