@media only screen and (max-width:1200px) {
    .child-main {
        width: 80%;
    }
    .right-top img {
        width: 100%;
    }
}

@media only screen and (max-width:756px) {
    .list-bottom {
        margin-left: 0 !important;
    }
    .right-top{
        display: none;
    }
    .mobile_title_img{
        display: block;
    }
    .mobile_title_img img{
        width: 100%;
    }
}

@media only screen and (max-width:720px) {
    .child-main {
        width: 100%;
        padding: 0 20px;
        padding-top: 120px;
    }
    .child-main-left {
        float: none;
        width: 100%;
    }
    .child-main-right {
        float: none;
        width: 100%;
    }
}

@media only screen and (max-width: 480px) {
    .break {
        padding: 20px 50px;
        display: none;
    }
}