This example displays a large, centered “Hello React!” message that fills the browser window. The app is built with React and ReactDOM, using a functional component to render the text inside a styled div. The project relies on the UMD builds of React 16.13.1 and ReactDOM, loaded directly from unpkg, with the application logic contained in a separate bundle.js file. The visualization demonstrates a minimal React setup rather than data-driven graphics, focusing on component rendering and static styling.