This example displays a minimal SVG scene containing a single circle centered within a 960 by 500 canvas. The page uses embedded CSS to remove default body margins and hide overflow. The markup directly employs the HTML `<svg>` element for vector rendering, with an HTML `<h1>` heading. The circle is defined with explicit `cx`, `cy`, and `r` attributes, demonstrating basic SVG shape creation without additional JavaScript libraries or external data sources.