This example creates a simple cartoon face using D3.js v7, rendered as SVG. It shows a yellow circle for the head, two eyes, animated eyebrows that move up and down using `transition().duration()`, and a frowning mouth drawn with the `arc()` shape generator. The code uses D3’s `select` to target the SVG element and demonstrates local ES6 module imports. The face is centered using dynamic width and height calculations, with eyebrows and eyes positioned via translations.