This example demonstrates how to render a dataset of CSS named colors as a stacked sequence of horizontal colored bars, each with a fixed width and height. Using React's `useState` and `useEffect` hooks, it fetches data from a CSV file via `d3.csv` and maps each row to a styled `div` element. The visualization relies on React's declarative rendering to translate raw tabular data into visual output, with ReactDOM mounting the component into the document root.