This example demonstrates how to load and display data in a React application using D3. It fetches a CSV file containing CSS named colors from a GitHub gist, then shows a summary message with the file size in kilobytes, row count, and column count. The code uses React hooks (`useState`, `useEffect`) to manage asynchronous data loading, and D3’s `csv` method to parse the remote file. The final visualization is a simple text output rendered via a `<pre>` element, with D3’s `csvFormat` used to compute the data size.