This example demonstrates how basic SVG shapes—circles, rectangles, lines, and paths—can be styled with inline attributes and CSS classes. The first shapes use default black fills, while others apply explicit `fill` and `stroke` properties, with a group inheriting a light-blue fill and black stroke. A `.lines` class sets stroke width, and a nested path rule overrides color, line join, and caps. The graphic is scaled using an SVG `transform`, and the document links to an external stylesheet for presentation.