.cardfan > img{

  position:absolute;

/*删除这里

border:10px solid #fff;

 box-shadow: 4px 4px 3px rgba(0, 0, 0, 0.2);

*/

  box-sizing:border-box;

  -webkit-transform-origin: center 400px;

  transform-origin: center 400px;

  -webkit-transition: -webkit-transform .7s ease;

  transition: transform .7s ease;

}