/*弹出框*/
 #tanchu{position:fixed; width:300px;  text-align:center; left:50%; top:50%; margin:-100px 0 0 -150px; background:#fff; border:1px solid #eee; overflow:hidden; z-index:100; display:none;}
 #tanchu .mian{ padding:30px 5px; }
 #tanchu .foot{height:25px; padding:5px 10px 0 0;  background:#eee;}
 #tanchu .foot input{foat:right; width:100px; height:20px; }

/*cover css*/