This example uses D3.js v5 to draw a simple smiling face entirely with SVG shapes. It centers a yellow circle on a 960-by-500 canvas, adds two black eye circles, and creates a smile with a curved arc using the `d3.arc` path generator. All elements are positioned relative to the center via a translated group, with coordinates hardcoded in the JavaScript. The styling is minimal, relying on a CSS file for full-screen display without margins or scrollbars.