This example uses D3.js to draw a simple cartoon face in SVG, centered within a 960×500 viewport. The face consists of a yellow circle with a black stroke, two eyes, animated eyebrows, and a mouth arc created with d3.arc. The eyebrows and mouth use chained transitions to repeatedly move and change fill color, creating a looping animation. All shapes are appended to a group translated to the canvas center, with fixed pixel offsets for eye spacing and eyebrow dimensions.