This example demonstrates how to compose basic SVG shapes—circles, rectangles, lines, and a path—inside a single `<svg>` element. The code uses plain SVG markup and CSS to control visual properties, such as setting fill colors, stroke widths, and stroke line joins. CSS classes like `.lines` apply styling to groups of shapes, while inline attributes and nested `<g>` transforms position and scale the elements. The rendering is purely static, with no data binding or interaction, showcasing direct SVG and CSS coordination.