.payBox{
    max-width: 680px;
    margin: 0 auto;
}
.payBox .mainTitle{
    font-size: 22px;
    color: #333;
    margin-bottom: 20px;
}
.payBox .price{
    color: #ff6200;
    font-size: 26px;
}
.groupBox{
    padding: 20px;
}
.groupBox .thumb{
    width: 70px;
    height: 70px;
    margin: 0 auto;
    background: #dedede;
    padding: 5px;
    border-radius: 10px;
}
.groupBox .thumb img{
    width: 70px;
    height: 70px;
}
.groupName{
    text-align: center;
    font-size: 18px;
    color: rgb(25,25,25);
    margin: 30px 0px 15px 0px;
}
.groupBox .subName{
    text-align: center;
    font-size: 16px;
    color: rgb(127,127,127);
}
.groupBox .groupDesc{
    border-top: 1px solid rgb(235,235,235);
    margin-top: 50px;
    padding-top: 20px;
    color: rgb(127,127,127);
    font-size: 14px;
}
.groupBox .groupDesc li{
    margin: 20px 0px;
}
.joinBtnBox{
    text-align: center;
}
.joinBtn{
    padding: 12px 50px;
    font-size: 16px;
    background: rgb(7, 193, 96);
    border-radius: 10px;
    color: #fff;
    display: block;
    text-align: center;
    margin-top: 20px;
    cursor: pointer;
    text-decoration: none;
}
.knowledgeBox{
    text-align: center;
    margin-top: 80px;
    padding: 10px;
}