This example renders a full-screen React component that displays the message “Hello React!” in large, centered text. It uses React 16.13.1 via the UMD production builds and renders the component into a root div using `ReactDOM.render`. The styling is applied through a CSS class defined in the HTML file. The visualization demonstrates a minimal React setup with static text output, relying on the `react` and `react-dom` libraries for rendering and DOM manipulation.