SVG Fundamentals
This example demonstrates a minimal SVG graphic: a single black circle positioned inside an HTML document. It shows how basic SVG elements render geometric shapes on a web page. The code defines an inline `<svg>` container without any attributes, then adds a `<circle>` element with explicit `cx`, `cy`, and `r` values to set its center coordinates and radius. No external JavaScript libraries or data sources are used; the visualization relies solely on the browser's native SVG rendering capabilities within the provided HTML structure.