This example demonstrates a minimal React application that loads a CSV file of CSS named colors using D3 utilities. It shows the downloaded data’s size, column count, and row count in a simple text display. The code uses React’s `useState` and `useEffect` hooks, with `d3.csv` to fetch the remote file and `d3.csvFormat` to measure its serialized size. The interface initially shows “Loading...” then updates once the async data fetch completes.