@media (min-width: 0px) and (max-width:750px) {
    .imageclass{
        display: none;
    }
    nav{
        padding: 0 0.4rem;
        box-sizing: border-box;
    }
    header {
        width: 100%;
        height: 4.6667rem;
        /* min-width: 100%; */
        /* background-image: url("../aiimage/videophone/minibanner.png"); */
        background-size: 100% 100%;
        position: relative;
    }
    .phonew{
        position: absolute;
        top:0.4rem;
        left: .6667rem;
        width:5.1rem
    }
    .phoneimageclass{
        width: 100%;
        height: 4.6667rem;
    }
    .title_one{
        font-family: Alibaba PuHuiTi;
        font-weight: 500;
        font-size: .48rem;
        color: #FFFFFF;
    }
    .xian_one{
        width: 1.3333rem;
        height: .0533rem;
        background: #F5F2F6;
        margin: .3rem 0 0.4rem;
    }
    .content{
        font-family: Alibaba PuHuiTi;
        font-weight: 400;
        font-size: .2133rem;
        color: #FFFFFF;
        line-height: .4rem;
    }
    #sectionbox{
        width: 100%;
        /* height: 16.9067rem; */
        background: #F6F8FB;
        padding: .6533rem 0.4rem .6667rem;
        box-sizing: border-box;
    }
    .section_one{
        display: flex;
        align-items: center;
    }
    .section_one_img{
        margin: 0 auto;
        width: 9.32rem;
        height: 4.8rem;
    }
    .section_two{
        width: 100%;
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
        margin-top: .6533rem;
        
    }
    .section_two li{
        display: flex;
        align-items: center;
        flex-direction: column;
        margin-top: .3733rem;
    }
    .section_two li p{
        height: .2667rem;
        font-family: PingFang SC;
        font-weight: 500;
        font-size: .2667rem;
        color: #138BFF;
        line-height: .2667rem;
        margin-top: .1733rem;
    }
    .minione{
        width: 4.4rem;
        height: 2.7733rem;
    }
}