A simple SVG face is drawn with a large yellow circle for the head and two smaller black circles for eyes. Built with D3 v5, the example uses `select` to target the SVG element, then appends and styles the circles with chained `attr` calls for position, radius, fill, and stroke. The coordinates are derived from the SVG’s `width` and `height` attributes to center the face, while a plain CSS file resets the page margin and hides overflow.