This example shows how a smiley face made of two eyes and a yellow circular head is constructed using inline SVG elements. The visualization renders a static graphic directly in the browser, with the head centered at (480, 250) and two dark eye circles placed symmetrically. The code uses raw SVG `<circle>` elements with explicit attributes for position, radius, fill, and stroke, alongside minimal CSS to hide page margins and overflow. No JavaScript libraries or data processing are involved; the visualization is purely declarative markup.