This example displays a full-width stacked bar of CSS named colors, with each row’s height fixed at 4 pixels and its background set to the corresponding hex value from the dataset. It loads color data from a GitHub Gist CSV file using D3’s `csv` utility, then uses React’s `useState` and `useEffect` hooks to fetch and store the data asynchronously. Once loaded, the `data.map()` function renders a `div` for each color, demonstrating a simple React-driven rendering pipeline alongside D3 for data loading.