This example demonstrates how to load and parse a remote CSV dataset using D3.js v5 within a simple HTML page styled with custom CSS. The page displays a light green SVG polygon and a heading, while a JavaScript script fetches the CSV from a GitHub Gist, calculates its size in kilobytes, row count, and column count, and prints this summary inside a styled `<pre>` element. The code uses `d3.csv` for data retrieval and `d3.csvFormat` to measure the data length, with the result presented as a plain text message on a goldenrod background.