This example demonstrates fundamental DOM manipulation with D3.js by constructing a yellow smiley face from SVG primitives, including animated eyebrows. The code uses D3 selections and the `arc` generator to draw the mouth, while `circle` and `rect` elements form the eyes and brows. The face is centered via a translated `<g>` group, and the eyebrows are positioned relative to the eye spacing. The visualization runs entirely in the browser with d3.v5, rendering static SVG without external data sources.