This example visualizes CSS named colors as a horizontal stack of colored bars, with each bar representing a row from a CSV dataset loaded via D3’s `csv` utility. The React `useState` and `useEffect` hooks manage asynchronous data loading, initially displaying a “Loading…” message before rendering one colored `<div>` per color entry using inline styles. The app uses ReactDOM to mount the component, while the data source is fetched from a remote gist URL.