<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8" />
    <title>Hello World</title>
    <script src="https://unpkg.com/react@17/umd/react.development.js"></script>
    <script src="https://unpkg.com/react-dom@17/umd/react-dom.development.js"></script>
    <!-- Don't use this in production: -->
    <script src="https://unpkg.com/@babel/standalone/babel.min.js"></script>
  </head>
  <body>
    <div id="app"></div>
    <script type="text/babel">

        const App = () => {
            let message = 'Hello From React!';

            return (
                <h1>{message}</h1>
            )
        }

        ReactDOM.render(<App />, document.getElementById('app'));

    </script>
  </body>
</html>

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