success/packages/excalidraw/example/public/index.html

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8" />
    <meta
      name="viewport"
      content="width=device-width, initial-scale=1, shrink-to-fit=no"
    />
    <meta name="theme-color" content="#000000" />

    <title>React App</title>
    <script>
      window.name = "codesandbox";
    </script>
  </head>

  <body>
    <noscript> You need to enable JavaScript to run this app. </noscript>
    <div id="root"></div>
    <script src="https://unpkg.com/react@18.2.0/umd/react.development.js"></script>
    <script src="https://unpkg.com/react-dom@18.2.0/umd/react-dom.development.js"></script>

    <!-- This is so that we use the bundled excalidraw.development.js file instead
    of the actual source code -->
    <script src="./excalidraw.development.js"></script>

    <script src="./bundle.js"></script>
  </body>
</html>