This example displays a single yellow circle with a black outline at the center of an SVG canvas. The page uses raw HTML, CSS, and JavaScript, with the circle defined directly in the SVG markup. The CSS sets the body margin to zero and hides overflow, while the SVG specifies a width of 960 pixels and height of 500 pixels. No external libraries are used; it is a bare-bones starter template for creating SVG-based visualizations.