This example demonstrates basic SVG shapes rendered directly in HTML, featuring two circles and two rectangles with varying positions and colors, including a red circle and a green square. The visualization uses plain SVG markup within index.html, styled minimally through CSS in styles.css, which sets the page margin to zero and hides overflow while applying a red highlight class. No external JavaScript libraries are used; the code relies solely on native SVG elements and CSS properties to construct the simple geometric composition.