This example shows a yellow smiley face rendered with two empty black eye circles on a solid yellow head, all centered and sized according to the browser window. The visualization uses React and ReactDOM to construct an SVG scene, with a `<g>` transform translating the origin to the viewport center before drawing each circle. The head and eyes are positioned using constants for offsets, radii, and stroke width, and the layout adjusts dynamically to the window’s width and height.