This example shows a simple smiling face made entirely of SVG shapes, with a yellow circular head and two black eyes rendered on a plain white background. The code uses vanilla JavaScript and CSS within an HTML page to generate the illustration. It relies on basic SVG elements like `circle` and `svg` viewBox, with inline styling for dimensions and stroke properties. The data source is static, consisting of hardcoded coordinates and radii for each circle, and the rendering approach is direct SVG markup without any external libraries or frameworks.