A single large yellow circle centered on a 960 by 500 SVG canvas is the entire visualization. The circle has a thick black outline and fills most of the available space, with no additional data or interaction. The example is built using raw HTML, CSS, and JavaScript, rendering directly through the SVG `<circle>` element. The CSS sets the page margin to zero and hides overflow, while the SVG attributes define the circle’s position, radius, fill, and stroke properties. No external libraries or frameworks are used.