This example shows a minimal React application that renders the text “Hello React!” centered on the page in extremely large type. The app uses React 16.13.1 and ReactDOM to create a functional component that returns a styled `<div>` element. The rendering approach relies on `ReactDOM.render()` to mount the component into the `#root` element defined in the HTML file, with CSS controlling the message’s font size and alignment. No external data or interaction is present; it is purely a static display.