A fork of the React Starter displays a single, centered "Hello React!" message in a large font. The visualization uses React and ReactDOM to render a static text element into the page's root division. The `App` constant returns a div with a CSS class that controls the message's size and alignment, while the `ReactDOM.render` API attaches the component to the DOM. The page loads React and ReactDOM from a CDN and executes the rendering through a compiled bundle.