This example shows a stylized yellow face built from SVG shapes—a circle for the head, circles for eyes, rectangles for eyebrows, and a half-annulus arc for the mouth. The eyebrows animate up and down in a repeating two-second transition using D3’s `transition().duration()`. The code uses `d3.select` with `d3.arc` to generate the mouth path, and positions elements via SVG attribute methods and template literals. Rendered in a React-free HTML page with D3 v5, the face scales relative to the SVG’s 960×500 dimensions.