This example demonstrates loading a CSV dataset of CSS named colors from a remote URL and displaying a concise summary of its contents using React state management. The app initializes with a “Loading...” message, then uses D3’s `csv` utility inside a `useEffect` hook to fetch the data, which is stored via `useState`. Once loaded, the `message` function computes the file size, row count, and column count using `d3.csvFormat` and string concatenation, rendering the result in a large `<pre>` element. The visualization relies on React’s component lifecycle and D3’s data-loading API, without any graphical charts.