This example displays the CSS named colors dataset as a stacked sequence of horizontal color swatches, each filling the full 960px width at 4px height. It loads the data from a CSV file using `d3.csv` and renders each row as a React `div` element with its background color set from the `RGB hex value` field, demonstrating React’s component-based rendering approach. The interface initially shows a “Loading…” message until the asynchronous CSV fetch completes via `useEffect`, after which the complete color spectrum appears.