*{
   margin:0;
   padding:0;
   font-family:siyuan;
}
body{
   width:100%;
  /* max-width:1600px;*/
   overflow-x:hidden;
}
#xc_banner{
   width:100%;
   height:210px;
}
#con{
   margin-top:15px;
   width:74%;
   margin-left:auto;
   margin-right:auto;
   margin-bottom:30px;
}

#con2{
   width:100%;
   margin-left:25px;
   padding-top:20px;
}