This example shows how to load and summarize a CSV dataset of CSS named colors using React and D3. The app uses React’s `useState` and `useEffect` hooks to fetch the data via D3’s `csv` utility, then displays the file size in kilobytes, row count, and column count in a large `<pre>` element. A brief “Loading...” message appears until the asynchronous request resolves, demonstrating how React state and D3’s data-loading APIs integrate within a single-component application.