A minimal React application renders the text “Hello React!” in large, centered typography. The example demonstrates the basic structure of a React project, using `ReactDOM.render` to mount a functional component into the DOM. It loads React and React-DOM from UMD builds via CDN, with the component defined in `index.js` and bundled into `bundle.js`. The styling is provided through a simple CSS class in the HTML file. No data visualization or dynamic behavior is present.