Smiley Face 1
A minimalist smiley face rendered as a pure SVG graphic on a yellow 960×500 canvas. The face consists of three circles: a large yellow head with a black stroke, and two smaller black circles for eyes, positioned symmetrically around the center. The code directly uses SVG elements (`<circle>`, `<svg>`) with explicit `cx`, `cy`, `r`, and `stroke-width` attributes, plus inline CSS to hide page overflow. No data or JavaScript libraries are involved; the visualization is static and hand-coded in HTML.