h3 {
    font-size: 18px;
    font-family: PingFangSC-Medium, PingFang SC;
    font-weight: 500;
    color: rgba(51, 51, 51, 1);
    line-height: 30px;
    text-align: center;
    width: 288px;
    margin: 32px auto;
    margin-bottom: 0px;
}


p.aa {
    font-size: 13px;
    font-family: Helvetica;
    color: rgba(153, 153, 153, 1);
    line-height: 16px;
    margin-top: 12px;
    margin-bottom: 24px;
    text-align: center;
}

.centent {
    width: 351px;
    font-size: 14px;
    font-family: PingFangSC-Regular, PingFang SC;
    font-weight: 400;
    color: rgba(102, 102, 102, 1);
    line-height: 28px;
    margin: 0px auto;
}