This example displays a summary of CSS named color data, showing the file size in kilobytes, row count, and column count as plain text. It uses React hooks (`useState`, `useEffect`) to manage asynchronous data loading, while D3’s `csv` function fetches the remote dataset. The `message` utility formats the statistics via `d3.csvFormat` and string concatenation. The interface toggles between a “Loading…” state and the computed metrics once the data arrives, rendering the result inside a large `<pre>` element.