@media screen and (min-width:751px) {
    * {
        margin: 0;
        padding: 0;
        border: 0;
    }
    div{
        margin: 0;
        padding: 0;
        border: 0;
       
    }
    .w {
        width: 1200px;
        margin: 0 auto;
    }
    ul li{
        list-style: none;
    }
    .ck-slide {
        width: 100%;
        min-width: 1200px;
        height: 474px;
        position: relative;
    
    }
    header {
        width: 100%;
        height: 474px;
        min-width: 1200px;
        /* background-image: url("../aiimage/Eye-protection/banner.png"); */
        background-size: 100% 100%;
        position: relative;
    }
    .imageclass {
        width: 100%;
        height: 474px;
        position: relative;
        object-fit: cover;
    }
    .top {
        position: absolute;
        top: 119px;
        /* left: 360px; */
        width: 534px;
        text-align: left;
    }
    .title_one{
        font-family: Alibaba PuHuiTi;
        font-weight: 500;
        font-size: 36px;
        color: #FFFFFF;
    }
    .xian_one{
        width: 100px;
        height: 4px;
        background: #F5F2F6;
        margin: 34px 0;
    }
    .content{
        font-family: Alibaba PuHuiTi;
        font-weight: 400;
        font-size: 16px;
        color: #FFFFFF;
        line-height: 30px;
    }
    .section_one{
        height: 794px;
        width: 100%;
        min-width: 1200px;
        background-image: url("../aiimage/Eye-protection/bg.png");
        background-size: 100% 100%;
        padding: 70px 0;
        box-sizing: border-box;
    }
    .cardtitle{
        font-family: Alibaba PuHuiTi;
        font-weight: 400;
        font-size: 28px;
        color: #333333;
        text-align: center;
        display: flex;
        align-items: center;
        justify-content: center;
        height: 26px;
    }
    .start_left_img{
        width: 14px;height: 14px;margin-right: 8px;
    }
    .start_right_img{
        width: 14px;height: 14px;margin-left: 8px;
    }
    .section_content ul{
        display: flex;
        margin-top: 42px;
        flex-wrap: wrap;
        justify-content:space-between;
    }
    .section_content ul li{
        width: 380px;
        height: 274px;
        background: linear-gradient(90deg, #EEF9FF, #F4F9FD);
        /* border-image: linear-gradient(0deg, #FFFFFF, #E9F6FD) 1 1; */
        border-radius: 10px;
        display: flex;
        align-items: center;
        flex-direction: column;
        padding: 25px 28px 17px 28px;
        box-sizing: border-box;
        text-align: center;
        /* 边框渐变 */
        border: 1px solid transparent;
        border-radius: 10px;
        background-clip: padding-box, border-box;
        background-origin: padding-box, border-box;
        background-image: linear-gradient(-90deg, #EEF9FF, #F4F9FD),linear-gradient(0deg, #FFFFFF, #E9F6FD);
        margin-bottom: 30px;
    }
    .section_content ul li:first-child{
        width: 790px;
        padding-left: 161px;
        padding-right: 161px;
        box-sizing: border-box;
    }
    .section_content ul li h2{
        font-family: Alibaba PuHuiTi;
        font-weight: 400;
        font-size: 22px;
        color: #333333;
        margin:17px 0 5px;
    }
    .section_content ul li p{
        font-family: Alibaba PuHuiTi;
        font-weight: 400;
        font-size: 16px;
        color: #666666;
    }
}