This example shows a single large yellow circle centered on a black-bordered SVG canvas. The visualization is built with a bare HTML page using inline SVG markup, defining the circle with explicit `cx`, `cy`, `r`, `fill`, `stroke`, and `stroke-width` attributes. No JavaScript libraries or external data sources are used; the rendering relies entirely on the browser’s native SVG support. The page sets its body margin to zero and hides overflow, so the circle fills the viewport without scrollbars.