/* * {
    line-height: normal;
    font-family: not specified !important;
    font-weight: normal;
} */

/*导航栏*/
/* #underline {
    left: 222px;
    width: 108px;
} */
/*正文部分*/
.container {
    margin-top: 48px;
    width: 100%;
    background-color: #F8F8F8;
}

.content {
    margin: 0 auto;
    width: 1200px;
    min-height: 860px;
}

.banner {
    width: 100%;
    height: 500px;
    background: url("../img/banner.png") 100% 100% no-repeat;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.banner_content_box {
    width: 48%;
    height: 240px;
    position: absolute;
    border-radius: 20px;
    background-color: #000000;
    opacity: 0.4;
    z-index: 1;
}

.banner_content_main {
    width: 48%;
    height: 240px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: absolute;
    color: #FFFFFF;
    z-index: 2;
}

.main-span-1 {
    font-size: 40px;
    font-weight: bold;
    margin-bottom: 40px;
}

.main-span-2 {
    font-size: 28px;
    font-weight: bold;
}

.course-main {
    margin: 30px auto;
    width: 1200px;
    display: flex;
    flex-wrap: wrap;
}

.course-item {
    width: 380px;
    margin: 10px;
    cursor: pointer;
}

.item-img {
    width: 100%;
    height: 200px;
}

    .item-img img {
        width: 100%;
        height: 100%;
    }

.item-content {
    width: 352px;
    padding: 0px 14px;
    background-color: #FFFFFF;
}

.item-title {
    width: 100%;
    padding: 13px 0px 10px 0px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 20px;
    color: #000000;
}

.item-remark {
    width: 100%;
    height: 50px;
    display: flex;
    align-items: center;
    font-size: 14px;
    color: #858585;
    box-sizing: border-box;
    padding-bottom: 15px;
    border-bottom: 1px solid #DDDDDD;
}

.item-tag {
    width: 100%;
    height: 50px;
    display: flex;
    align-items: center;
    color: #858585;
    font-size: 14px;
}

    .item-tag span {
        margin-right: 20px;
    }

        .item-tag span:last-child {
            margin-right: 0px;
        }

/**********响应式分割线*************/
@media (max-width:1440px) {
    /*导航栏*/
    /* #underline {
        left: 178px;
        width: 86px;
    } */
    /*正文部分*/
    .container {
        margin-top: 48px;
    }

    .content {
        margin: 0 auto;
        width: 1200px;
        min-height: 860px;
    }

    .banner {
        width: 100%;
        height: 500px;
        background: url("../img/banner.png") 100% 100% no-repeat;
        position: relative;
        display: flex;
        justify-content: center;
        align-items: center;
    }

    .banner_content_box {
        width: 68%;
        height: 240px;
        position: absolute;
        border-radius: 20px;
        background-color: #000000;
        opacity: 0.4;
        z-index: 1;
    }

    .banner_content_main {
        width: 68%;
        height: 240px;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        position: absolute;
        color: #FFFFFF;
        z-index: 2;
    }

    .main-span-1 {
        font-size: 40px;
        font-weight: bold;
        margin-bottom: 40px;
    }

    .main-span-2 {
        font-size: 28px;
        font-weight: bold;
    }

    .course-main {
        margin: 30px auto;
        width: 1200px;
        display: flex;
        flex-wrap: wrap;
    }

    .course-item {
        width: 380px;
        margin: 10px;
        cursor: pointer;
    }

    .item-img {
        width: 100%;
        height: 200px;
    }

        .item-img img {
            width: 100%;
            height: 100%;
        }

    .item-content {
        width: 352px;
        padding: 0px 14px;
        background-color: #FFFFFF;
    }

    .item-title {
        width: 100%;
        padding: 13px 0px 10px 0px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
        font-size: 20px;
        color: #000000;
    }

    .item-remark {
        width: 100%;
        height: 50px;
        display: flex;
        align-items: center;
        font-size: 14px;
        color: #858585;
        box-sizing: border-box;
        padding-bottom: 15px;
        border-bottom: 1px solid #DDDDDD;
    }

    .item-tag {
        width: 100%;
        height: 50px;
        display: flex;
        align-items: center;
        color: #858585;
        font-size: 14px;
    }

        .item-tag span {
            margin-right: 20px;
        }

            .item-tag span:last-child {
                margin-right: 0px;
            }
}