.about-main {
    display: block;
    width: calc(100% - var(--size-grid-gap) * 2);
    max-width: var(--size-safearea);
    margin: 0 auto 100px;
    padding-top: 172px;
}

.about-main a:hover {
    text-decoration: none;
}

.about-main h1 {
    font-family: PingFang HK;
    font-style: normal;
    font-weight: 500;
    font-size: 36px;
    line-height: 50px;
    color: #313131;
}

.about-main h5 {

    font-style: normal;
    font-weight: normal;
    font-size: 14px;
    line-height: 170%;
    letter-spacing: 0.03em;
    color: #777777;
    margin: 24px auto;
}

.about-main section:nth-child(1) {
    margin-bottom: 20px;
    width: 70%;
}

.about-main section:nth-child(2) {
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: space-between;
}

.about-main section:nth-child(3) {
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: space-between;
}

.about-main section:nth-child(2)>.left,
.about-main section:nth-child(3)>.left {
    width: 70%;
}

.about-main section:nth-child(2)>.right,
.about-main section:nth-child(3)>.right {
    display: flex;
    width: calc(30% - 16px);
    flex-direction: column;
}

.contacts-shenzhen-ctn>.right,
.contacts-shenzhen-ctn>.right {
    display: flex;
    justify-content: space-between;
    flex-direction: column;
    width: calc(30% - 16px);
}

.about-main section:nth-child(2) form {
    width: 100%;
}

.about-main section:nth-child(2) .input-margin-bottom {
    margin-bottom: 20px;
}

.about-main .tips {
    color: var(--color-red);
    padding: 5px;
    display: none;
}

.about-main .right>div:nth-child(1),
.about-main .right>div:nth-child(2),
.about-main .right>div:nth-child(3) {
    background: #f5f5f5;
    border: 1px solid #F8F9FA;
    box-sizing: border-box;
    border-radius: 4px;
    padding: 20px;
    margin-bottom: 16px;
}

.about-main .question-char {
    width: 15px;
    height: 15px;
    font-size: 12px;
    text-align: center;
    color: var(--color-red);
    border: 1px solid var(--color-red);
    border-radius: 15px;
    margin-bottom: 5px;
}

.about-main a {
    display: block;

    font-style: normal;
    font-weight: normal;
    font-size: 14px;
    line-height: 170%;
    color: rgba(62, 63, 70, 0.8);
    margin-top: 10px;
    text-align: left;
}

.about-main .btn_suggest,
.about-main .btn_suggest:visited {
    rest: none;
    font-family: PingFang HK;
    font-style: normal;
    font-weight: normal;
    font-size: 16px;
    padding: 10px 15px;
    text-align: center;
    color: #fff;
    border: none;
    border-radius: 4px;
    background: #C03939;
    width: 100%;
    cursor: pointer;
    outline: none;
}

.input-margin-bottom:nth-child(3) {
    height: 300px;
}


/*contacts*/

.contacts-shenzhen {
    background: url(/website/img/about/contact-us1.jpg) no-repeat;
    background-size: contain;
}

.contacts-shenzhen h1,
.contacts-guilin h1 {
    color: white;
    margin-bottom: 32px;
}

.contacts-company-info .address {
    color: #FFFFFF;
    margin-bottom: 18px;
}

.contacts-company-info .telphone {
    color: #FFFFFF;
}

.contacts-shenzhen .datetime,
.contacts-guilin .datetime {
    color: #FFFFFF;
}

.contacts-shenzhen-right-box {
    display: block;
    background: #FBFBFB;
    border: 1px solid #F8F9FA;
    box-sizing: border-box;
    border-radius: 4px;
    padding: 20px !important;
    margin-bottom: 0px !important;
}

.contacts-shenzhen-right-box:last-child {
    margin-bottom: 0px;
}

.contacts-shenzhen-right-box h4 {
    font-family: PingFang HK;
    font-style: normal;
    font-weight: 500;
    font-size: 20px;
    line-height: 28px;
    color: #313131;
}

.contacts-shenzhen-right-box h6 {
    margin-top: 15px;
    font-family: PingFang HK;
    font-style: normal;
    font-weight: normal;
    font-size: 16px;
    line-height: 22px;
    color: #777777;
}

.about-main section:nth-child(3) {
    border-top: 1px solid #ECECEC;
    padding-top: 50px;
    margin-top: 50px;
}

.contacts-guilin {
    background: url(/website/img/about/contact-us2.jpg) no-repeat;
    background-size: contain;
}

.contacts-shenzhen,
.contacts-guilin {
    padding: 50px;
    box-sizing: border-box;
    display: flex;
    justify-content: space-between;
    flex-direction: column;
}

.contacts-company-info>.address {
    margin-bottom: 18px;
}

@media only screen and (max-width: 767px) {
    .about-main section:nth-child(1) {
        width: 100%;
    }
    .about-main section:nth-child(2) {
        flex-direction: column;
    }
    .about-main section:nth-child(3) {
        flex-direction: column;
    }
    .about-main section:nth-child(2)>.left {
        width: 100%;
        order: 1;
    }
    .about-main section:nth-child(3)>.left {
        width: 100%;
        order: 1;
    }
    .about-main section:nth-child(2)>.right {
        width: 100%;
    }
    .about-main section:nth-child(3)>.right {
        width: 100%;
    }
    .contacts-company-info {
        margin-bottom: 50px;
    }
    .contacts-shenzhen-ctn>.left {
        width: 100%;
        order: unset !important;
    }
    .contacts-guilin-ctn>.left {
        width: 100%;
        order: unset !important;
    }
}