.page_dqwz p{
    
    margin-top: 20px;
    margin-bottom: 20px;
    margin-left: 140px;
}

.course_tit{
        margin-bottom: 15px;
    margin-left: 140px;
    margin-top: 50px;
}

.course_tit a{
    font-size: 16px;
    background: #153889;
    color: #fff;
    padding: 15px;
    border-radius: 5px;
}