.about-course-main {
    width: 70%;
    margin: auto;
    margin-bottom: 60px;
}

.course-main-title {
    height: 120px;
    font-size: 36px;
    color: #083E94;
    display: block;
    text-align: left;
    line-height: 120px
}

.course-main-p {
    font-size: 24px;
    color: #000;
    text-align: left;
}


/* 时间轴 */

.main-li-yuan {
    width: 18px;
    height: 18px;
    background: #15A3E2;
    border-radius: 50%;
    list-style: none;
    display: inline-block;
    margin-left: 6px;
    z-index: 333;
    margin-bottom: 30px;
}

.main-li-yuan1 {
    width: 18px;
    height: 18px;
    background: #15A3E2;
    border-radius: 50%;
    list-style: none;
    display: inline-block;
    margin-left: 6px;
    z-index: 333;
}

.main-li-dayuan {
    width: 30px;
    height: 30px;
    background: #083E94;
    border-radius: 50%;
    list-style: none;
    z-index: 999;
    display: inline-block
}

.bianLine {
    display: inline-block;
    height: 48px;
    width: 2px;
    background: #083E94;
    height: 100%;
    position: absolute;
    left: 15px;
    top: 3px;
}

.list-yuan {
    text-align: left;
    display: flex;
}

.list-yuan b {
    display: block;
}

.about-course-mian-box {
    margin-top: -110px
}

.bg-top-img {
    background-image: url(../img/wenhuaTop.png);
    background-repeat: no-repeat;
    background-size: 100% 100%;
    background-position: bottom;
}

.course-main {
    font-size: 18px;
    font-weight: bold;
    color: #000;
    line-height: 30px;
    display: flex;
    padding-left: 20px;
    width: 100%;
}

.course-main span {
    font-size: 22px;
    color: #15A3E2;
    width: 165px;
}
.mainImg{
    width: 100%;
}
.imgs{
    width: 100%;
    height: 100%;
}
/* 媒体查询 */

@media (max-width: 970px) {
    .about-course-main {
        width: 90%;
        margin: auto;
        margin-bottom: 60px;
    }
    .course-main-title {
        height: 60px;
        font-size: 20px;
        color: #083E94;
        display: block;
        text-align: left;
        line-height: 60px
    }
    .course-main-p {
        font-size: 14px;
        color: #000;
        text-align: left;
    }
    /* 时间轴 */
    .main-li-yuan {
        width: 12px;
        height: 12px;
        background: #15A3E2;
        border-radius: 50%;
        list-style: none;
        display: inline-block;
        margin-left: 1px;
        z-index: 333;
    }
    .main-li-yuan1 {
        width: 12px;
        height: 12px;
        background: #15A3E2;
        border-radius: 50%;
        list-style: none;
        display: inline-block;
        margin-left: 1px;
        z-index: 333;
    }
    .main-li-dayuan {
        width: 14px;
        height: 14px;
        background: #083E94;
        border-radius: 50%;
        list-style: none;
        z-index: 999;
        display: inline-block;
        z-index: 333;
    }
    .bianLine {
        display: inline-block;
        height: 48px;
        width: 2px;
        background: #083E94;
        height: 100%;
        position: absolute;
        left: 6px;
        top: 3px;
    }
    .list-yuan {
        text-align: left;
        display: flex;
    }
    .list-yuan b {
        display: block;
        width: 82%;
    }
    .about-course-mian-box {
        margin-top: -110px
    }
    .bg-top-img {
        background-image: url(../img/fanzhanTop.png);
        background-repeat: no-repeat;
        background-size: 100% 100%;
        background-position: bottom;
        margin-bottom: 0px;
    }
    .course-main {
        font-size: 12px;
        font-weight: bold;
        color: #000;
        line-height: 20px;
        width: 90%;
        display: flex;
    }
    .course-main span {
        font-size: 14px;
        color: #15A3E2;
        width: 80px;
    }
}