This example shows a simple, hand-coded smiley face rendered as two black circles for eyes inside a larger yellow circle with a black outline, drawn on a blank white canvas. The visualization is built using the SVG element embedded directly in an HTML page, with CSS in the `<style>` tag setting the body margins and overflow. No data source or external libraries are used, and the SVG positions are all hard-coded coordinates for the 960 by 500 viewport.