A cheerful yellow face built from basic D3.js shapes remains centered on a red background. D3 selections and transitions animate the eyebrows upward and then back down. The code constructs the face using SVG circles, rectangles, and an arc path, with `select`, `arc`, and chained `transition` calls from the D3 v7 module. All elements are positioned relative to a translated group, and the animation runs continuously on page load.