ghost-portal/packages/ui-react/index.html

<html>
  <head>
    <link rel="stylesheet" type="text/css" href="https://cdnjs.cloudflare.com/ajax/libs/normalize/5.0.0/normalize.min.css" />
  </head>
  <body>
    <div id="demo"></div>
    <script src="./demo.js"></script>
  </body>
</html>