#installButton {
      display: none;
      padding: 12px 20px;
      border: none;
      border-radius: 6px;
      background: black;
      color: white;
      cursor: pointer;
      font-size: 16px;
    }

    #iosInstallMessage {
      display: none;
      padding: 15px;
      margin-top: 20px;
      background: #f1f1f1;
      border-radius: 8px;
    }