This example demonstrates the use of React state to manage asynchronous data loading, displaying file size, row count, and column count from a CSS named colors dataset. The visualization shows a text summary rather than a graphical chart, with a loading message rendered while data is pending. The code uses React hooks like `useState` and `useEffect` to fetch and store data, while the `d3.csv` function loads the CSV and `d3.csvFormat` calculates the byte size. The dataset is sourced from a GitHub gist containing named CSS color values.