This example demonstrates basic SVG shapes—circles and rectangles—stylized with CSS properties like fill, stroke, and stroke-width. The code arranges these shapes into groups using SVG `<g>` elements with transforms for positioning, and applies class-based styling to lines and paths. It uses React to render the SVG markup directly in the HTML page, with a stylesheet controlling visual attributes such as color and line join styles. The visualization highlights how SVG primitives can be combined with CSS for simple, declarative graphics.