html,
  body {
      position: relative;
      height: 100%;
      overflow: hidden;
  }

  body {
      font-size: 14px;
      color: #000;
      margin: 0;
      padding: 0;
  }

  .content {
      display: flex;
      flex-direction: column;
      height: 100%;
  }

  .logo {
      width: 122px;
      margin: 15px 22px;
  }

  .swiper {
      width: 100%;
      flex: 1
  }

  .swiper-slide {
      display: flex;
      justify-content: center;
      align-items: center;
  }

  .swiper-slide img {
      margin: 0 auto;
      height: 100%;
      outline: none;
  }

  .swiper-pagination {
      display: flex;
      align-items: center;
      justify-content: center;
  }

  .swiper-pagination-bullet {
      width: 5px;
      height: 5px;
      background-color: #dedede;
      border-radius: 50%;
      opacity: 1;
  }

  .swiper-pagination-bullet-active {
      width: 20px;
      height: 12px;
      background: #ffffff;
      border: 1px solid #eeeeee;
      border-radius: 7px;
      box-shadow: 0px 1px 2px 0px rgba(0, 0, 0, 0.10);
      margin: 0;
  }

  .bottom {
      height: 200px;
      width: 100%;
      display: flex;
      flex-direction: column;
      background-color: #fff;
      align-items: center;
      justify-content: center;
      z-index: 10;
  }

  .bottom .button {
      width: calc(100% - 60px);
      height: 52px;
      background: #0084AC;
      border-radius: 11px;
      color: #FFFFFF;
      line-height: 52px;
      text-align: center;
      margin-top: 15px;
      text-decoration: none;
  }

  .bottom img {
      width: 150px;
      height: auto;
      margin-top: 20px;
      margin-bottom: 25px;
  }

  .page-mask,
  .page-mask1 {
      display: none;
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background-color: rgba(0, 0, 0, .5);
      z-index: 20
  }

  .down-dialog {
      display: none;
      position: fixed;
      width: calc(100% - 30px);
      background-color: #fff;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      border-radius: 10px;
      overflow: hidden;
      z-index: 21;

  }

  .dialog-title {
      height: 35px;
      border-radius: 10px 10px 0 0;
      background-color: #E8E8E8;
      color: #1F2533;
      font-size: 14px;
      text-align: center;
  }

  .dialog-title>.text {
      line-height: 35px;
  }

  .close-icon {
      font-size: 24px;
      right: 15px;
      top: -1px;
      position: absolute;
      text-decoration: none;
  }

  .android-box,
  .ios-box {
      margin: 15px;
      display: none;
      flex-direction: column;

  }


  .addr-tag {
      margin-bottom: 8px;
      width: 100%;
      height: 50px;
      line-height: 50px;
      text-align: center;
      text-decoration: none;
      background-color: #0084AC;
      font-size: 16px;
      color: #fff;
      border: 0;
      border-radius: 5px;
  }

  .bottom-dialog {
      position: absolute;
      width: 100%;
      height: calc(100% - 120px);
      background: #ffffff;
      border-radius: 15px 15px 0px 0px;
      top: 130px;
      left: 0;
      padding-top: 10px;
      z-index: 21;
  }

  .line {
      width: 36px;
      height: 3px;
      background: #dadbda;
      border-radius: 1.5px;
      margin: 0 auto;
  }

  .platform-box {
      display: none;
      height: calc(100% - 50px);
      margin-top: 25px;
      overflow: auto;
  }

  .teachTitle {
      height: 24px;
      text-align: center;
      font-size: 17px;
      font-weight: 500;
      color: #333333;
      line-height: 24px;
      margin-bottom: 20px;
  }

  .platform-box>img {
      width: 100%;
  }