A minimal React application renders a full-screen "Hello React!" message in a centered, oversized font. The example uses React 16.13.1 and ReactDOM to mount a functional component into a root `<div>` element. The component returns a single `<div>` with a CSS class that applies a font size of 13em and text alignment. This starter demonstrates the basic structure of a React visualization project, with no data or interactive behavior, serving primarily as a template for building more complex charts and graphics.