.briefIntroduction {
    background-color: #edeef0;
    width: 100%;
    min-height: calc(100vh - 520px);
    display: flex;
    align-items: center;
    justify-content: center;
  }
  
  .briefIntroduction .content {
    width: 1080px;
    background-color: #fff;
    min-height: calc(100vh - 550px);
    border-radius: 10px;
    padding: 15px;
    margin: 10px 0px;
  }
  
  .briefIntroduction .content .content_title {
    font-size: 20px;
    font-weight: bold;
    border-bottom: 1px solid #ccc;
    padding-bottom: 10px;
  }
  
  .briefIntroduction .content .content_main {
    padding: 10px 0px;
    line-height: 29px;
    font-size: 17px;
  }
  
  @media (max-width: 1300px) {
      .briefIntroduction .content{
          width: 90%;
      }
  }
  
  @media (max-width: 768px) {
      .briefIntroduction .content{
          width: 95%;
      }
  }