This example demonstrates loading a CSV dataset of CSS named colors using D3’s `csv` utility, then rendering each color as a horizontal strip in a stacked bar-like layout via React state and `useEffect`. The visualization appears only after the data is fetched, with a loading message shown beforehand. The code uses React 16.9, ReactDOM, and D3 v5, pulling from a GitHub-hosted CSV file and mapping each row’s RGB hex value to a styled `<div>`.