A simple smiley face is drawn using SVG primitives, with a yellow circle for the head and two smaller black circles for the eyes. The rendering uses inline SVG within an HTML page, styled via an external CSS stylesheet that sets the shape attributes such as fill color, stroke, and radius. The code relies on standard SVG circle elements and CSS properties like `fill`, `stroke`, `cx`, `cy`, and `r`, with no external JavaScript libraries or data sources.