img{
    max-width: 100%;
    height: auto;
}
.flex_box{
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}
.banner_bg{
    position: absolute;
    top: 80px;
    left: 0px;
    width: 100%;
    z-index: -1;
}
.banner{
    text-align: center;
    padding-top: 112px;
}
.banner h1{
    font-size: 62px;
    font-weight: 600;
    color: #fff;
    line-height: 62px;
    margin-bottom: 20px;
}
.banner p{
    font-size: 24px;
    color: #fff;
    font-weight: 500;
    line-height: 32px;
}
.about{
    margin-top: 80px;
    padding: 48px;
    background: #fff;
    box-shadow: 0px 8px 26px -12px rgba(0, 0, 0, 0.27);
    border-radius: 20px;
}
.about h2{
    font-size: 52px;
    color: #000;
    font-weight: 700;
    margin-bottom: 20px;
    text-align: left;
}
.about>p{
    margin-bottom: 15px;
    font-size: 20px;
    color: rgb(81, 81, 81);
    line-height: 30px;
}
.about .border{
    border-bottom: 1.5px dashed #F2F2F2;
    display: block;
    padding-top: 15px;
    margin-bottom: 35px;
}
.about .box{
    justify-content: space-between;
}
.about .box div{
    padding: 10px;
    display: inline-block;
    box-sizing: border-box;
}
.about .box div h3{
    font-size: 24px;
    line-height: 30px;
    color: #000;
    margin-top: 18px;
    margin-bottom: 8px;
}
.about .box div p{
    color: rgb(102, 102, 102);
    font-size: 16px;
    line-height: 24px;
}
.history{
    margin-top: 80px;
}
h2{
    font-size: 42px;
    line-height: 48px;
    color: #000;
    font-weight: 600;
    text-align: center;
    margin-bottom: 36px;
}
.history .box>div{
    padding: 35px;
    background: #1abc9c;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 260px;
    height: 202px;
    border-radius: 12px;
    overflow: hidden;
    position: relative;
    margin-top: 20px;
    text-align: center;
}
.history .box>div h3{
    font-size: 46px;
    line-height: 52px;
    color: #fff;
}
.history .box>div p{
    font-size: 16px;
    line-height: 24px;
    color: #fff;
}
.history .box>div:hover div{
    top: 0%;
}
.history .box>div>div p{
    font-size: 14px;
    line-height: 20px;
    color: #000;
}
.history .box>div>div{
    transition: top .5s linear;
    position: absolute;
    top: 100%;
    width: 100%;
    height: 100%;
    border: 1px solid rgb(233, 233, 233);
    background: rgb(255, 255, 255);
    border-radius: 12px;
    text-align: center;
    align-items: center;
    justify-content: center;
    padding: 0 16px;
}
.product{
    margin-top: 70px;
    padding: 70px 0px;
    background: rgba(237, 247, 246, .5);
}
.product_box:nth-child(2){
    max-width: 1120px;
}
.product_box{
    max-width: 764px;
    width: 100%;
    margin: auto;
}
.product_box>div img{
    width: 100%;

}
.product_box>div{
    border-radius: 15px;
    overflow: hidden;
    margin-top: 48px;
    max-width: 352px;
    width: 100%;
    box-shadow: 0px 0px 10px 0px rgba(28, 153, 137, 0.27);
    background: #fff;
    text-align: center;
    padding-bottom: 30px;
}
.product_box>div .name{
    font-size: 24px;
    color: #000;
    font-weight: 600;
    margin-top: 20px;
}
.product_box>div .info{
    font-size: 16px;
    color: rgb(74, 74, 74);
    line-height: 24px;
    padding: 0 16px;
    margin: 10px auto 0px;
}
.product_box>div a{
    width: 186px;
    height: 42px;
    line-height: 42px;
    background: #2FC0AE;
    border-radius: 4px;
    font-size: 16px;
    color: #fff;
    display: block;
    margin: 20px auto 0px;
    transition: all .3s linear;
}
.product_box>div a:hover{
    background: #FFBA29;
}
.user{
    padding-top: 70px;
}
.user_box>div{
    max-width: 260px;
    width: 100%;
    text-align: center;
    margin-top: 30px;
}
.user_box>div .name{
    font-size: 24px;
    font-weight: bold;
    line-height: 28px;
    color: #000;
    margin-top: 20px;
}
.user_box>div .info{
    font-size: 16px;
    color: #171717;
    line-height: 24px;
    margin-top: 16px;
}
.trust{
    margin-top: 70px;
    padding: 48px 0;
    background: rgb(233, 237, 245);
}
.trust h2{
    margin-bottom: 30px;
}
.trust_box{
    font-size: 0;
}
.trust_box img{
    padding: 10px;
    box-sizing: border-box;
}
.reviews{
    padding-top: 70px;
    padding-bottom: 70px;
}
.reviews>div{
    margin: 0 16px;
    padding: 32px;
    background: #1A224E;
    border-radius: 12px;
    max-width: 340px;
    width: 100%;
}
.reviews>div img{
    max-width: 100%;
    margin-bottom: 20px;
}
.reviews>div p{
    font-size: 16px;
    line-height: 24px;
    color: #fff;
    margin-bottom: 30px;
}
.contact{
    margin-top: 20px;
    margin-bottom: 70px;
}
.contact_box>div{
    padding: 32px;
    background: #F8F8F9;
    max-width: 370px;
    width: 100%;
    box-sizing: border-box;
    border-radius: 12px;
}
.contact_box>div .title{
    font-size: 34px;
    color: #081D34;
    font-weight: 600;
    margin-top: 20px;
}
.contact_box>div .info{
    margin-top: 15px;
    font-size: 16px;
    color: #081D34;
}
.contact_box>div>a{
    display: inline-block;
    margin-top: 20px;
    font-size: 16px;
    color: #21D2BD;
    font-weight: 500;
}
.contact_box>div .share{
    font-size: 0px;
    margin-top: 20px;
}
.contact_box>div .share a{
    width: 34px;
    height: 34px;
    color: #fff;
    display: inline-block;
    border-radius: 50%;
    line-height: 34px;
    text-align: center;
    margin-right: 10px;
}
.contact_box>div .share a i{
    font-size: 22px;
}
.contact_box>div .share a:hover{
    opacity: 0.9;
}
.contact_box>div .share a:nth-child(1){
    background: rgb(59, 89, 152);
}
.contact_box>div .share a:nth-child(2){
    background: rgb(29, 161, 242);
}
.contact_box>div .share a:nth-child(3){
    background: rgb(205, 32, 31);
}
@media (max-width: 1200px){
    .banner_bg{
        display: none;
    }
    body{
        background: url(/img/about/banner.jpg) no-repeat center 80px;
    }
    .history .box>div{
        width: 24%;
        box-sizing: border-box;
    }
    .user_box>div{
        width: 24%;
    }
    .trust_box img{
        width: 20%;
    }
    .reviews>div,
    .contact_box>div{
        width: 32%;
        margin: 0;
    }
    .product_box{
        justify-content: center;
    }
    .product_box>div{
        max-width: 220px;
        margin-left: 10px;
        margin-right: 10px;
        margin-top: 20px;
    }
}
@media (max-width: 850px){
    .history .box>div{
        padding: 10px;
    }
}
@media (max-width: 630px){
    .product_box>div{
        max-width: 330px;
    }
    .about{
        padding: 40px 20px;
    }
    .history .box>div p,
    .history .box>div>div p{
        font-size: 13px;
        line-height: 20px;
    }
    .history .box>div{
        width: 48%;
    }
    .product_box{
        flex-direction: column;
        justify-content: center;
        align-items: center;
    }
    .user_box>div{
        width: 50%;
    }
    .trust_box img{
        max-width: 100%;
        width: 50%;
    }
    .reviews>div,
    .contact_box>div{
        max-width: 100%;
        width: 100%;
        margin: 0;
        margin-top: 20px;
    }
}