This example shows a yellow smiley face with two eyes, eyebrows, and a curved mouth, all rendered as SVG elements. The face is centered and drawn using D3 v5’s `select`, `arc`, and geometric shape methods. A transition animates the eyebrows by shifting them upward on load before returning them to their original position. The design mirrors a classic smiley icon, with the mouth created from an arc path and the eyes and head as circles.