A set of steel-blue geometric shapes demonstrates the contrast between circles and ellipses. The SVG drawing shows one large circle, two small ones, and several ellipses with varying horizontal and vertical radii, all enclosed within a rectangular frame. Constructed using D3.js version 5, the example uses selection methods and attribute setters like `.append('circle')`, `.attr('cx')`, and `.attr('ry')`. The code imports specific functions from the d3 module, and the static SVG is rendered with no data binding or animation.