An SVG scene of two circles, one black and one red, demonstrates fundamental geometric shapes and the `fill` attribute for styling in SVG. The page uses plain HTML structure, a static `<svg>` element with hardcoded `cx`, `cy`, and `r` attributes, and no external libraries or JavaScript. It serves as a bare-bones example of declarative vector graphics rendering in the browser, using only the native SVG API on a simple HTML document.