@media (max-width: 576px){
    body {
        padding-bottom:76px;
    }
    .bg {
        height: 300px;
    }

    .navbar {
        top: 0;
    }
    .bg-text {
        top: 120px;
    }
    .bg-text > span {
        font-size: 36px;
        margin: 0 50px;
    }
    .news-title {
        font-size: 20px;
    }
    .contact {
        padding: 30px;
    }
    #contact-form > .row {
        display: block;
    }
    #msg {
        padding: .375rem .75rem;
        font-size: 1rem;
        font-weight: 400;
        line-height: 1.5;
        height: 70px;
    }
    .copyright-text {
        font-size: 12px;
        text-align: center;
    }

    /*列表页*/
    .banner-sub-title {
        font-size: 20px;
    }
    .banner-sub-title > span {
        margin-right: 15px;
    }

    .article-list {
        padding-top: 20px;
    }

    .article-list > li {
        border-bottom: 1px solid #DEDEDE;
        padding-top: 0;
        padding-right: 0;
    }

    .article-list > li > .date {
        width: 80px;
    }
    .article-list > li > .date > .date-md {
        font-size: 16px;
    }
    .article-list > li > .date > .date-year {
        font-size: 12px;
    }

    .article-list > li > a {
        padding-left: 0;
        padding-right:  0;
    }

    /**新闻详情**/
    .content {
        padding-left: 10px;
        padding-right: 10px;
    }
    .content-main {
        padding-top: 30px;
    }
    h1.title {
        font-size: 28px;
        line-height: 1.5;
    }


    footer {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
    }
}

@media (min-width: 577px) and (max-width: 768px) {
    body {
        padding-bottom:76px;
    }
    .bg {
        height: 300px;
    }

    .navbar {
        top: 0;
    }
    .bg-text {
        top: 120px;
    }
    .bg-text > span {
        font-size: 36px;
    }
    .news-title {
        font-size: 20px;
    }
    .contact {
        padding: 50px;
    }
    #contact-form > .row {
        display: block;
    }


    /*列表页*/
    .banner-sub-title {
        font-size: 24px;
    }
    .banner-sub-title > span {
        margin-right: 15px;
    }

    .article-list {
        padding-top: 20px;
    }

    .article-list > li {
        border-bottom: 1px solid #DEDEDE;
        padding-top: 0;
        padding-right: 0;
    }

    .article-list > li > .date {
        width: 80px;
    }
    .article-list > li > .date > .date-md {
        font-size: 18px;
    }
    .article-list > li > .date > .date-year {
        font-size: 14px;
    }
    .article-list > li > a{
        padding-left: 0;
        padding-right:  0;
    }

    /**新闻详情**/
    .content {
        padding-left: 10px;
        padding-right: 10px;
    }
    .content-main {
        padding-top: 30px;
    }
    h1.title {
        font-size: 28px;
        line-height: 1.5;
    }

    footer {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
    }
}

@media (min-width: 769px) and (max: 992px) {
    .navbar-collapse {
        position: fixed;
        top: 50px;
        left: 0;
        padding-left: 15px;
        padding-right: 15px;
        padding-bottom: 15px;
        width: 75%;
        height: 100%;
    }

    .navbar-collapse.collapsing {
        left: -75%;
        transition: height 0s ease;
    }

    .navbar-collapse.show {
        left: 0;
        transition: left 300ms ease-in-out;
    }

    .navbar-toggler.collapsed ~ .navbar-collapse {
        transition: left 500ms ease-in-out;
    }

    .bg {
        height: 300px;
    }
    .bg-text {
        top: 120px;
    }

    .bg-text > span {
        font-size: 36px;
    }


    /*列表页*/
    .banner-sub-title {
        font-size: 24px;
    }

}