Hello HTML
This example displays a single yellow circle centered on a 960-by-500 SVG canvas, outlined with a thick black stroke. The circle is positioned explicitly via `cx`, `cy`, and `r` attributes inside an inline `<svg>` element. It demonstrates the minimal structure of an HTML page, using embedded CSS to remove margins and hide overflow, while the circle itself is rendered purely with static SVG markup—no JavaScript or external libraries are involved. The code serves as a bare-bones introduction to combining HTML, CSS, and SVG for basic visual output.