@media (min-width: 0px) and (max-width:750px) {
    .imageclass{
        display: none;
    }
    header {
        width: 100%;
        height: 4.6667rem;
        /* min-width: 100%; */
        /* background-image: url("../aiimage/videophone/minibanner.png"); */
        background-size: 100% 100%;
        position: relative;
    }
    .w{
        /* width: 100%; */
    }
    .phonew{
        position: absolute;
        top: 1rem;
        left: .6667rem;
        width:5.2rem
    }
    .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;
    }
    .section_container{
        width: 100%;
        /* height: 12.24rem; */
        padding: .4rem 0;
        box-sizing: border-box;
    }
    .section_container_content{
        padding: 0 .4rem;
        box-sizing: border-box;
    }
    .section_content_left{
        width: 100%;
        /* height: 5.7067rem;
        background: #FFFFFF; */
        box-shadow: 0rem 0rem .2267rem .0133rem rgba(0,0,0,0.09);
        border-radius: .2667rem;
    }
    .section_content_left_top{
        width: 100%;
        height: .96rem;
        background: linear-gradient(86deg,  #29C7FB,#3D93FD);
        border-radius: .2667rem .2667rem 0 0;
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 0 .32rem;
        box-sizing: border-box;
    }
    .sectiontitle{
        font-family: PingFang SC;
        font-weight: 500;
        font-size: .4rem;
        color: #FFFFFF;
    }
    .iconimg{
        width: .72rem;
        height: .72rem;
    }
    .content_two{
        font-family: PingFang SC;
        font-weight: 400;
        font-size: .3467rem;
        color: #666666;
        margin-top: -0.0267rem;
    }
    .closeimg{
        width: .4133rem;
        height: .4133rem;
        margin-right: .12rem;
    }
    .sectioncontent_bottom{
        /* height: 4.7467rem; */
        padding: .4rem .32rem .1333rem 0.32rem;
        box-sizing: border-box;
        display: flex;
        flex-direction: column;
        justify-content: space-between;
    }
    .sectioncontent{
        display: flex;
        /* height: .3467rem; */
        margin-bottom: .3733rem;
    }
   
    .section_content_left{
        margin-bottom: .32rem;

    }
    .section_main{
        width: 100%;
        /* height: 29.8267rem; */
        background-image: url("../partimage/alipaynfc/screenadv-bg.png");
        background-size: 100% 100%;
        padding: .6667rem .4rem;
        box-sizing: border-box;
    }
  
    .longxian{
        width: 100%;
        height: 1px;
        background: #ECEAEA;
        margin-bottom: .3733rem;
    }
    .neileft p{
        font-family: PingFang SC;
        font-weight: 400;
        font-size: .3467rem;
        color: #666666;
    }
    .videoimg{
        width: 8.6133rem;
        height: 6.8533rem;
        margin: .5rem auto 0;
    }
    .videoimgtwo{
        display: none;
    }
    .minivideoimgtwo{
        display: block;
        width: 8.0533rem;
        height: 6.3067rem;
        margin: 1.1733rem auto 0;
        
    }
    .videoimgthree{
        width:5.0667rem;
        height: 6.3067rem;
        margin: 1.1867rem auto 0;
    }
    .slieone{
        display: flex;
        flex-direction: column-reverse;
    }
    .neititleone{
        margin-bottom: .7733rem;
    }
    .padcenter {
        padding: 0 .6rem;
        box-sizing: border-box;
        font-family: PingFang SC;
        font-weight: 400;
        font-size: .3467rem;
        color: #666666;
        margin: .3333rem auto 0;
        display: flex;
        justify-content: center;
        text-align: center;
    }
    .videfour{
        width: 4.9333rem;
        height: 6.1467rem;
        margin-top: .64rem;
        margin-bottom: .6667rem;
    }
    .stabilize{
        width: 1.2933rem;
        height: 1.4933rem;
    }
    .Mental{
        margin-top: .0667rem;
    }
  
    .partstar {
        display: flex;
        justify-content: center;
        align-items: center;
        height: .3467rem;
        margin-bottom: .4rem;
    }
 
    .optionimg{
        width: .7067rem;
        height: .7867rem;
    }
    .toolimg{
        width: .8rem;
        height: .72rem;
    }
    .usreimg{
        width: .64rem;
        height: .7467rem;
    }

    .start_left_img{
        width: .2667rem;height: .2667rem;margin-right: .1067rem;
    }
    .start_right_img{
        width: .2667rem;height: .2667rem;margin-left: .1067rem;
    }
    .cardtitle{
        font-family: PingFang SC;
        font-weight: 500;
        font-size: .4267rem;
        color: #333333;
        text-align: center;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    nav{
        padding: 0 0.4rem;
        box-sizing: border-box;
    }
    .description-content {
  
    }
    .des-img{
        width: 8.72rem;
        height: 2.9333rem;
        display: flex;
        justify-content: center;
        margin: .6667rem auto 0;
    }
    .description-content li{
        margin-top: .5067rem;
    }
    .description-content li:first-child{
        margin-top: .7333rem;
    }
    .description-content li h2{
        font-family: PingFang SC;
        font-weight: 500;
        font-size: .4rem;
        color: #10225A;
        display: flex;
        align-items: center;
        line-height: .3733rem;
    }
    .description-content li img {
        width: .3467rem;
        height:.3467rem ;
        margin-right: .1333rem;
    }
    .description-content li p{
        font-family: PingFang SC;
        font-weight: 400;
        font-size: .3467rem;
        color: #666666;
        margin-top: .2rem;
        margin-left: .48rem;
    }
}