Fork of Let's make a face with D3.js!
A D3.js v5 example constructs a smiling face entirely from SVG shapes, including a circle head, eyes, and an arc-based mouth. The animation focuses on the eyebrows, which move up and down via a chained `transition().duration(2000)` call, demonstrating fundamental DOM manipulation. The code uses D3's `select` to target the SVG element and `arc` to generate the mouth's path, with all facial features positioned relative to the canvas center via SVG group translations.