A stylized yellow face drawn with SVG shapes animates its eyebrows and mouth. D3.js v5 constructs the face from circles, rectangles, and an arc-based path, grouping elements with `svg.append` and positioning them via `attr` transforms. The eyebrows move up and down through chained `transition().duration()` calls, while the mouth morphs from a frown to a wide open smile by swapping the `d` attribute computed with `d3.arc()`. All geometry derives from hardcoded constants in the script.