This example uses D3 v6 and the SVG rendering framework to display the classic Iris dataset as a scatter plot. It loads the CSV from a GitHub gist and parses numeric columns, then uses `scaleLinear` for both axes to map petal length against sepal length. The code demonstrates D3's modern `join` API to bind data to circles, and includes `axisLeft` and `axisBottom` for labeled axes with a custom font size. The plot fills the browser window, resizing with `window.innerWidth` and `window.innerHeight`.