A single yellow circle with a black outline is centered on a 960-by-500 SVG canvas. The example demonstrates the absolute minimum HTML structure required for a D3-free visualization, using only the SVG `<circle>` element with explicit `r`, `cx`, and `cy` attributes. The page is styled with CSS to remove margins and hide overflow, so the shape fills the viewport. It serves as a static, non-interactive starting point for building more complex charts.