.QRCode{display:inline-block;position:relative;overflow:hidden}.QQMode{position:absolute;left:0;bottom:100%;right:0;height:0;background-color:rgba(0,0,0,.45);-webkit-transition:all .2s ease-in-out;transition:all .2s ease-in-out;cursor:pointer;color:#fff;display:-webkit-box;display:-ms-flexbox;display:flex;-ms-flex-pack:distribute;justify-content:space-around;-webkit-box-align:center;-ms-flex-align:center;align-items:center;font-size:20px;font-weight:bolder;-webkit-box-sizing:border-box;box-sizing:border-box;padding:10px}.QRCode:hover .QQMode{bottom:0;height:100%}