A single yellow circle with a black outline and two smaller black circles creates a simple happy face. The face is drawn using an SVG element that is 960 by 500 pixels. The main circle is centered with a radius of 240, while the eyes are positioned to the left and right of the center, using the `cx`, `cy`, and `r` attributes. The example uses raw SVG markup directly in an HTML file, with no external JavaScript libraries or data sources.