This example shows a single yellow circle with a thick black outline centered on a 960-by-500 SVG canvas. The circle is drawn directly in the `index.html` file using inline SVG markup within an HTML page, with CSS setting the body margin to zero and hiding overflow. The visualization relies solely on the browser’s native SVG rendering, using the `circle` element’s `cx`, `cy`, `r`, `fill`, `stroke`, and `stroke-width` attributes. No JavaScript or external libraries are involved, making it a minimal demonstration of static vector graphics.