This example shows a simple smiley face made of three overlapping circles, rendered directly in an SVG element embedded in HTML. The face consists of a large yellow circle with a black outline for the head, and two smaller black circles for the eyes, all positioned using explicit `cx`, `cy`, and `r` attributes. The code uses no external libraries—only native SVG markup—and the styling is handled through inline presentation attributes and a minimal CSS style block. The visualization is static, with no interaction or animation.