index.css

body {
    background: #F6F7FB;
}

.main {
    background: #fff;
    width: 10rem;
    margin: 0 auto;
}

.switchTab {
    width: 10rem;
    height: 1rem;
    line-height: 1rem;
    display: flex;
    align-items: center;
    margin-top: 0.15rem;
    background: #fff;
}

.switchTab div {
    flex: 1;
    text-align: center;
    color: #8D8D8D;
    font-size: 0.427rem;
}

.switchTab div.selected {
    font-weight: bold;
    position: relative;
    color: #222222
}

.switchTab div.selected::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0.253rem;
    height: 0.08rem;
    border-radius: 0.04rem;
    background: #222222;
}

.textCon, .textCon2 {
    width: 10rem;
    min-height: 100vh;
    box-sizing: border-box;
    padding: 0 0.56rem 0 0.507rem;
    font-size: 0.373rem;
    line-height: 0.6rem;
    color: #22222B;
    padding-bottom: 0.4rem;
    ;
}

.subTitle {
    width: 3.947rem;
    height: 0.987rem;
    background: url(../images/title.png) no-repeat;
    background-size: contain;
    text-align: center;
    color: #22222B;
    font-size: 0.4rem;
    font-weight: bold;
    margin: 0 auto;
    margin-top: 0.32rem;
    box-sizing: border-box;
    padding-top: 0.1rem;
    line-height: 0.9rem;
}

.redBgTitle {
    width: 3.947rem;
    height: 0.987rem;
    background: url(../images/red_bg_title.png) no-repeat;
    background-size: contain;
}

.textCon p {
    margin-top: 0.4rem;
}

.textCon span {
    color: #00F7FF;
}

.textCon2 {
    display: none;
}