This example demonstrates primitive SVG shapes—circles and rectangles—with inline fill attributes, alongside grouped elements that inherit styling and a polyline path. The code uses raw SVG elements and CSS classes, where the `.lines` class applies stroke properties and the `.lines path` rule adds a red rounded stroke. A `<g>` element with a transform attribute shifts a pink-and-black group of shapes, while CSS sets the page margin and overflow. No JavaScript libraries are involved; the rendering relies solely on SVG markup and stylesheet rules.