index.html

<!DOCTYPE html>
<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" />
    <title>React | HTML</title>

    <script
      src="https://unpkg.com/react@18/umd/react.development.js"
      crossorigin
    ></script>
    <script
      src="https://unpkg.com/react-dom@18/umd/react-dom.development.js"
      crossorigin
    ></script>
    <script src="https://unpkg.com/@babel/standalone/babel.min.js"></script>
  </head>
  <body style="background-color: rgb(28, 28, 28); color: white">
    <div id="root"></div>
    <div id="newElement"></div>
    <div id="selectedElements"></div>
    <div id="jsxElement"></div>
    <div id="returnJsx"></div>
    <script type="text/babel" src="./index.js"></script>
  </body>
</html>