@media (min-width: 1200px) {
    .case_box {
        margin: 0 5px;
        /*display: inline-block;*/
        width: 32%;
        position: relative;
    }

    .about-content,
    .about-content-right {
        width: 100%;
    }

    .img_box {
        width: 260px;
        height: 200px;
    }

    .img_box img {
        width: 100%;
        height: 100%;
    }

    .case {
        display: flex;
        flex-wrap: wrap;
    }

    .case_box p {
        text-align: center;
        cursor: pointer;
    }

    .details-tit {
        border-bottom: 2px solid #29e;
        margin-bottom: 10px;
    }

    .case-details {
        display: none;
    }

    .flex {

    }

    .details_tab {
        display: none;
    }

    .tit-test {
        padding: 5px 35px;
        background: #29e;
        color: #fafafa;
        font-size: 16px;
        display: inline-block;
    }

    .details-test {
        font-size: 18px;
        text-indent: 36px;
    }

    .case_box h4 {
        color: red;
    }

    .Fan {
        padding: 0 30px;
        background: #29e;
        color: white;
        font-size: 12px;
        text-align: center;
        float: right;
        cursor: pointer;
        vertical-align: middle;
    }
}
@media (min-width: 0)and (max-width: 320px){
    .img_box{
        /*width: 230px;*/
        height: 160px;

    }
    .details-test{
        font-size: 12px;
        text-indent: 26px;
    }
    .img_box img {
        width: 100%;
        height: 100%;
    }

    .case {
        display: flex;
        flex-wrap: wrap;
    }

    .case_box p {
        text-align: center;
        cursor: pointer;
    }

    .details-tit {
        border-bottom: 2px solid #29e;
        margin-bottom: 10px;
    }

    .case-details {
        display: none;
    }

    .flex {

    }

    .details_tab {
        display: none;
    }

    .tit-test {
        padding: 5px 35px;
        background: #29e;
        color: #fafafa;
        font-size: 16px;
        display: inline-block;
    }

    .details-test {
        font-size: 18px;
        text-indent: 36px;
    }

    .case_box h4 {
        color: red;
    }

    .Fan {
        padding: 0 30px;
        background: #29e;
        color: white;
        font-size: 12px;
        text-align: center;
        float: right;
        cursor: pointer;
        vertical-align: middle;
    }
}
@media(min-width:321px)and (max-width: 600px){
    .img_box{
        /*width: 283px;*/
        height: 210px;

    }
    .details-test{
        font-size: 13px;
        text-indent: 26px;
    }
    .case {
        display: flex;
        flex-direction: column;
    }
    .case_box{
        margin-bottom: 10px;
    }
    .img_box>img{
        height:100%
    }

    .img_box img {
        width: 100%;
        height: 100%;
    }

    .case {
        display: flex;
        flex-wrap: wrap;
    }

    .case_box p {
        text-align: center;
        cursor: pointer;
    }

    .details-tit {
        border-bottom: 2px solid #29e;
        margin-bottom: 10px;
    }

    .case-details {
        display: none;
    }

    .flex {

    }

    .details_tab {
        display: none;
    }

    .tit-test {
        padding: 5px 35px;
        background: #29e;
        color: #fafafa;
        font-size: 16px;
        display: inline-block;
    }

    .details-test {
        font-size: 18px;
        text-indent: 36px;
    }

    .case_box h4 {
        color: red;
    }

    .Fan {
        padding: 0 30px;
        background: #29e;
        color: white;
        font-size: 12px;
        text-align: center;
        float: right;
        cursor: pointer;
        vertical-align: middle;
    }
}