This fork of the "Let's make a face" tutorial builds a yellow smiley face with animated eyebrows using D3.js v5. The example demonstrates fundamental SVG DOM manipulation and transitions. A group element centers the face, while circles form the eyes and a path, created with the d3.arc generator, draws the mouth. D3 transitions, chained over two seconds each, move the eyebrows up and down repeatedly, showing how to animate SVG attributes without explicit JavaScript timers.