This example uses React to render a single centered message, “Hello React!”, at a very large font size. The page displays the text as a static visual statement, with styling applied through a CSS class. The code creates a functional component, `App`, and mounts it into the DOM using `ReactDOM.render`. It loads React and ReactDOM from UMD builds via a script tag, with the application logic bundled separately. The visualization is purely typographic and does not involve data processing or external datasets.