/**********************分辨率样式***********************/
@media (min-width:1600px) {
    .container {
        width: 1400px;
        margin: 0 auto;
    }

}

@media (max-width:1600px) {
    .container {
        width: 1400px;
        margin: 0 auto;
    }

}

@media (max-width:1500px) {
    .container {
        width: 1300px;
        margin: 0 auto;
    }

}

@media (max-width:1400px) {
    .container {
        width: 1100px;
        margin: 0 auto;
    }

}

@media (max-width:1200px) {
    .container {
        width: 900px;
        margin: 0 auto;
    }
}



@media (max-width:992px) {
    .img_container {
        height: 200px;
    }
}

@media (max-width:769px) {}

@media (max-width:640px) {
    .container {
        width: 460px;
    }

    .ban1 {
        height: 250px;
    }

    .ban1 h2 {
        bottom: 135px;
        font-size: 22px;
    }

    .ban1 h3 {
        bottom: 105px;
        font-size: 16px;

    }

    .mtb50 {
        margin: 10px 0;
    }


    .case_li li {
        width: 33.33%;
        padding: 0 8px;
        margin-bottom: 10px
    }

    .img_container {
        height: 110px;
    }

    .img_text {
        font-size: 18px;
    }
}

@media (max-width:460px) {
    .container {
        width: 340px;
    }

    .mtb50 {
        margin: 40px 0;
    }

    .img_container {
        height: 100px;
    }

    .case_li li {
        margin-bottom: 30px;
    }
}

@media (max-width:360px) {
    .container {
        width: 290px;
    }

    .ban1 {
        height: 215px;
    }

    .ban1 h3 {
        bottom: 90px;
    }
}

@media (max-width:300px) {
    .container {
        width: 270px;
        padding-left: 0;
        padding-right: 0;
    }

    .case_li li {
        width: 30%;

    }

    .img_container {
        height: 80px;
    }

    .ban1 h2 {
        bottom: 118px;
        font-size: 20px;
    }

    .ban1 h3 {
        bottom: 78px;
        font-size: 12px;
    }
}