SVG Fundamentals
A minimal HTML page demonstrates the foundational building blocks of SVG by rendering a single red circle inside an `<svg>` element. The example uses inline SVG markup with a `<circle>` element, specifying center coordinates (`cx`, `cy`) and radius (`r`) as attributes. Written in plain HTML and CSS, it shows how static vector graphics can be embedded directly into a webpage without any JavaScript or external libraries, serving as a starting point for more complex data visualizations.