This example shows three filled circles arranged diagonally on a white background, with one black circle and two gray circles, rendered as static SVG ellipses. The page uses a minimal HTML structure with inline CSS to center the content and set a large base font size. The visualization is built directly with SVG elements in the markup, without any JavaScript libraries or data processing. The code defines each circle’s position and radius explicitly via `cx`, `cy`, `rx`, and `ry` attributes within an `<svg>` container.