iframe {
      width: 100%;
      height: 100vh;
      border: none;
      margin: 0;
      padding: 0;
      
    }

    body {
      -webkit-user-select: none;
      -moz-user-select: none;
      -ms-user-select: none;
      user-select: none;
      margin: 0;
      overflow: hidden
    }

    *,
    *::before,
    *::after {
      box-sizing: border-box;
    }