This example demonstrates how to load and display a summary of CSS named colors data using React and D3. The app fetches a CSV file via `d3.csv` and stores the result in React state with `useState` and `useEffect`. While the data loads, it shows a “Loading...” message, then renders a text report through the `message` function, which formats the data using `d3.csvFormat` to display file size, row count, and column count. The visualization uses SVG rendering within a React component.