@media screen and (min-width: 1200px) and (max-width: 1380px) {
    .main_middle {
        width: 100%;
        padding-left: 10px;
        padding-right: 10px;
    }
    .caseline,
    .casecircle {
        display: none;
    }
    .pro_left {
        padding-left: 5.3%;
        padding-right: 1%;
    }
    .lcases {
        padding-top: 30px;
    }
}