.courseDesc {
  padding-top: 50px;
  padding-left: 30px;
  padding-right: 30px;
  white-space: normal;
  
  .intro {
    position: relative;
    .intro-bg {
      width: 100%;
    }
    .intro-title {
      position: absolute;
      font-size: 38px;
      width: 100%;
      top: 0;
      color: #fff;
      text-align: center;
      height: 80px;
      line-height: 80px;
    }
    .intro-desc {
      position: absolute;
      width: 100%;
      top: 100px;
      padding: 0 30px;
      left: 10px;
      color: #5c6066;
      font-size: 30px;
    }
  }
  .problem {
    position: relative;
    .intro-bg {
      width: 100%;
    }
    .intro-title {
      position: absolute;
      font-size: 38px;
      width: 100%;
      top: 0;
      color: #fff;
      text-align: center;
      height: 80px;
      line-height: 80px;
    }
    .intro-question {
      position: absolute;
      top:70px;
      left: 10px;
      padding: 0 30px;
      color: #5c6066;
    }
    .intro-question-title {
      font-size: 34px;
      color: #333;
      padding-top: 30px;
    }
    .intro-question-answer {
      font-size: 30px;
      color: #5c6066;
    }
  }
}