This example displays all named CSS colors as stacked horizontal stripes, one per row, using each color’s RGB hex value as the background. The React app fetches a CSV of named colors via `d3.csv`, stores the result in state with `useState`, and maps over the data to render a series of divs with fixed width and height. The visualization relies on React’s `useEffect` for data loading and ReactDOM for mounting, with D3 used solely for CSV parsing.