This example shows a minimal HTML page that renders a single SVG circle using no JavaScript libraries. The page contains an inline SVG element with a circle that has a radius of 100 pixels and centers itself via the `align` attribute. The rendering relies entirely on the browser’s native SVG support, with no external data or interaction. The source code is a bare-bones HTML document, and the description notes it uses only standard HTML and SVG elements, not D3 or other visualization APIs.