A yellow smiley face is drawn in SVG using D3.js v5, with animated eyebrows that shift downward and back over two seconds. The code builds the face by manipulating SVG elements—circles for the head and eyes, rectangles for brows, and a path generated with d3.arc for the mouth. Select and transition methods drive the eyebrow movement, while the layout is centered using width and height attributes from the SVG. Eyebrow positions and eye spacing are defined as numeric constants.