.qrcodemin {
    position: fixed;
    left: 20px;
    top: 15px;
    background: #fff;
    padding: 5px 5px 1px 5px;
    z-index: 99999;
    cursor: pointer;
}
.qrcode {
    position: fixed;
    top: 140px;
    background: #fff;
    padding: 10px 10px 6px 10px;
    z-index: 99999;
    cursor: pointer;
    margin: auto;
    display: none;
}