This example displays a text summary of CSS named color data fetched from a GitHub gist, showing file size, row count, and column count. It uses React’s `useState` and `useEffect` hooks to manage asynchronous data loading, while d3’s `csv` and `csvFormat` utilities handle parsing and formatting the CSV source. The message is rendered as a large `<pre>` element, with a "Loading..." placeholder until data arrives. d3.v7 and React 16.9 are loaded via UMD scripts in the HTML.