This example uses D3.js to construct a simple animated face from basic SVG shapes. A static yellow circle forms the head, while two black circles representing the eyes undergo staggered transitions, changing their fill color from black to transparent and back, creating a blinking effect. A mouth is drawn using D3’s `arc` function to generate a path with specified inner and outer radii. The code demonstrates modular imports from local ES6 modules and loading D3 via UNPKG.