@media (min-width: 992px) {
    .heading-section.a.mb-lg-90 {
        margin-bottom: 90px;
    }

    .heading-section.a.mb-lg-60 {
        margin-bottom: 60px;
    }
}

/* 小于lg */
@media (max-width: 991px) {
    .header-box {
        padding: 0;
    }

    .indexB-img {
        right: 0;
    }

    .indexC-list {
        flex-flow: wrap;
    }

    .indexC-list a {
        margin: 0 0 5px;
        flex: 0 0 auto;
        width: 50%;
        padding: 12px 16px;
        font-size: 14px;
    }

    .navbar-nav .nav-item .nav-link {
        line-height: 40px;
    }

    header {
        box-shadow: 0 2px 10px 0 rgb(0 0 0 / 10%);
    }

    .indexA .heading-section h1 {
        font-size: 26px;
    }

    .indexA-img {
        margin-top: 30px;
    }

    .indexB {
        background: #105580;
    }

    .indexB::before {
        display: none;
    }

    .indexD::before {
        display: none;
    }

    .indexD-news {
        margin-bottom: 1.5em;
    }

    .indexE-case {
        margin-bottom: 1.5em;
    }

    .fonter-title {
        margin-top: 2em;
    }

    .page-about-list {
        width: 100%;
        margin-left: 10px;
        margin-top: 20px;
    }
}

/* 小于md */
@media (max-width:767px) {}

/* 手机 */
@media (max-width: 576px) {}