This example shows a minimal SVG rendering of a single circle, demonstrating the basic structure of an HTML page with embedded SVG content. The code uses a simple circle element with explicit `cx`, `cy`, and `r` attributes to position and size the shape. The page is built with plain HTML and CSS, with no JavaScript or external libraries. It serves as the simplest possible starting point for a visualization, derived from the HTML Starter template, and can be extended with JavaScript for interactive graphics.