      * {
          padding: 0; margin: 0; box-sizing: border-box;
      }
      html, body {
          height: 100vh;
          width: 100vw;
          overflow:hidden;
          background-color: #000;
          color: #fff;
      }
    </style>
  </head>
  <body>
    <script src="ui/main.js" type="application/javascript"></script>
  </body>
</html>
