This example shows a minimal React application that renders the text "Hello React!" centered on the page. The code uses React 16.10.0 and ReactDOM to mount a functional component into a root div. A single component defines the message with a large font-size style, while the HTML file includes the React libraries from unpkg and loads a bundled script. The rendering approach uses ReactDOM.render with JSX, demonstrating a basic starter setup for React-based data visualization projects.