This example demonstrates how React and D3 can work together to load and summarize a dataset of CSS named colors. It displays a text summary showing the data size in kilobytes, the number of rows, and the number of columns. The code uses React's `useState` and `useEffect` hooks to manage state and fetch the CSV file via D3's `csv` utility. Once loaded, the data is formatted with D3's `csvFormat` function to calculate the file size.