A yellow circle with black outlines forms a face, complete with two eyes, animated eyebrows that move up and down, and a curved smile drawn using D3's `arc` generator. The SVG elements are positioned relative to a centered group, with the eyebrows animating through chained `transition` calls that alter the group's transform over two-second intervals. This example uses D3 v5's `select` and `arc` functions to build and animate the face entirely in the browser.