This example demonstrates how to load and parse CSV data using D3 version 5. It fetches a dataset of CSS named colors and displays a summary of the file size, row count, and column count in a large text element. The primary method uses `d3.csv` with a promise, while commented-out alternatives show the same task with `fetch` and `async`/`await`, plus a nested promise approach sometimes called the “pyramid of doom.” The text output is rendered using standard DOM manipulation via `textContent`.