This example shows a simple, stylized face built entirely from SVG primitives, with yellow circular head, black-outlined features, and a red background. A group element centers the face on the canvas, while nested groups position eyes and eyebrows relative to each other. The eyebrows animate vertically using two chained `transition` calls with a duration of 1000 milliseconds each, creating a continuous up-and-down motion. The code uses D3 v6’s `select`, `append`, and `attr` methods, and the mouth is generated using the `arc` shape generator with specified inner and outer radii and angle parameters.