.mask {
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    position: fixed;
    top: 0;
    z-index: 9999999;
    display: none;
}

.code2 {
    width: 305px;
    height: 350px;
    background: #fff;
    position: fixed;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
}

.code2 img {
    width: 270px;
    margin-left: 18px;
    margin-top: 18px;
}

.code2 p {
    font-size: 18px;
    text-align: center;
    line-height: 55px;
}