This example demonstrates the basic usage of D3 to load and summarize a CSV dataset. It fetches a CSV file containing CSS named colors from a GitHub gist using `d3.csv`, then displays the dataset’s row count, column count, and approximate file size in kilobytes. The computed information is rendered as plain text inside a `<pre>` element with a large font size. The code relies on D3’s CSV parsing and formatting utilities, including `d3.csv`, `d3.csvFormat`, and the resulting data array’s `length` and `columns` properties.