<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <script crossorigin src="https://unpkg.com/react@18/umd/react.development.js"></script>
    <script crossorigin src="https://unpkg.com/react-dom@18/umd/react-dom.development.js"></script>
    <script src="https://unpkg.com/@babel/standalone/babel.min.js"></script>
    <title>My website</title>
</head>

<body>
    <h1>My website</h1>

    <div id="banner"></div>

    <footer>
        <p>footer</p>
    </footer>

    <script type="text/babel">
        const Banner = () => {
            return (
                <div>
                    <p>banner</p>
                </div>
            )
        }
    </script>

    ReactDOM.render(
    <Banner />, document.getElementById('banner'))
</body>

</html>

check what is worn with the code Your entire response should be in English, and in all capital letters.
user