This example shows a yellow smiley face drawn with D3.js, centered in an SVG canvas with a black outline. The code demonstrates fundamental DOM manipulation by selecting the SVG element, appending a group for centering, and adding a circle with fixed attributes. Using d3.select and d3.arc from the v5 module, it sets the circle’s radius to half the SVG’s height. The rendering relies on SVG primitives, with styles defined in an external stylesheet that removes margins and hides overflow. No interactive features or animated eyebrows are implemented in the provided files.