@media screen and (max-width:992px) {
    .bar_top {
        height: 35px;
        line-height: 35px;
    }
    .navbar_dis nav {
        height: 35px;
    }
    .navbar-brand {
        margin-left: 20px;
    }
    .navbar-toggler {
        margin-right: 20px;
    }
    .navbar-brand img{
        width: 50%;
        vertical-align: baseline;
    }
    #navbarBtn>i {
        font-size: 18px;
    }
    .navbar {
        padding: 0;
    }
    #navbarBtn>i {
        font-size: 18px;
    }
    .navbar-toggler {
        padding: 0;
    }
    .navbar-light .navbar-brand {
        height: 35px;
    }

    .footer_info .footer_info_1,.footer_info .footer_info_2 {
        flex: 0 0 335px;
    }
    .footer_info_2_1, .footer_info_2_2 {
        flex: 0 0 100px;
    }
    .footer_info_2 h4 {
        font-size: 14px;
        line-height: 19px;
    }
    .footer_info_2 h5 {
        font-size: 12px;
        line-height: 16px;
    }
    .footer_info_1 h3 {
        font-size: 22px;
        line-height: 38px;
    }
    .footer_info_1 h5 {
        font-size: 14px;
        line-height: 20px;
    }
    .beian {
        font-size: 12px;
        line-height: 16px;
        margin-top: 50px;
    }
    #navbarNavDropdown ul>li>a {
        font-size: 17px;
        line-height: 50px;
        width: 100vw;
    }
    .dropdown-item {
        font-size: 14px;
        line-height: 25px;
    }
    .dropdown-menu>a {
        line-height: 25px;
    }
}