#warpper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
  }
  .retrun-btn {
    width: 90vw;
    margin: 0 auto;
    margin-top: 3rem;
    padding-top: 2rem;
  }
  .retrun-btn .container .btn a {
    text-decoration: none;
    color: #fff;
    background-color: #00a0e8;
    padding: 0.3rem 1rem 0.3rem 0.7rem;
    border-radius: 20px;
  }
  #body {
    flex: 1;
    padding-top: 3rem;
  }
  #body .main-title1 {
    padding: 1rem;
    color: #00a0e8;
    font: 1rem "PingFangSC Medium";
    text-align: center;
  }
  #body .sec-title {
    color: #00a0e8;
    font: 0.875rem "PingFangSC Semibold";
    text-align: center;
  }
  #body .info {
    margin: 0 1rem;
    padding-top: 2rem;
    padding-bottom: 3rem;
    font: 0.875rem "PingFangSC Regular";
    color: #646667;
  }
  #body .list {
    width: 90vw;
    font: 0.875rem "PingFangSC Regular";
    color: #646667;
    margin: 0 auto;
    text-align: justify;
    padding-bottom: 2rem;
  }
  #body .list .height-light {
    color: #00a0e8;
    font-weight: bold;
  }