SVG fundamentals
A minimal HTML page demonstrates the foundational building blocks of SVG rendering by embedding a single circle element directly into the document. The circle is defined with explicit `cx`, `cy`, and `r` attributes to position and size it within the default SVG viewport. The page uses inline CSS to style a separate message class, though no JavaScript or external libraries appear in the code. This example serves as a bare-bones introduction to how SVG shapes are declared and displayed in a browser.