A bare-bones HTML page renders a single black circle centered on a 960×500 SVG canvas. The circle is drawn using the SVG `<circle>` element, with its center at (480, 250) and a radius of 200. The page includes a minimal embedded CSS style that removes body margins and hides overflow. No external libraries are used; the visualization relies solely on native HTML, SVG, and CSS. The example demonstrates the simplest possible SVG-based data visualization approach.