This example demonstrates how to create and style basic SVG shapes—circles, rectangles, lines, and paths—using both inline attributes and CSS classes. A root `<g>` element applies a global scale transform, while nested groups use translate to position shape clusters, with one group inheriting fill and stroke styles and another defining thick, rounded line styles via the `.lines` class. The SVG is rendered directly in HTML with a 960×500 viewport, and CSS controls body margins and line appearance.