This example shows a single large yellow circle centered on a black-stroked SVG canvas. The circle fills most of the 960×500 viewport, with a radius of 245 and a 10-pixel stroke. The visualization uses a plain HTML page with inline SVG markup, defining the circle via `<circle>` elements with explicit `cx`, `cy`, `r`, `fill`, and `stroke` attributes. No JavaScript libraries or data sources are involved; the rendering relies entirely on static SVG. The body margin is zeroed and overflow hidden to present the graphic edge-to-edge.