This example demonstrates how SVG shapes and CSS classes combine to create a variety of visual elements. It shows circles, rectangles, lines, and paths arranged in a grid, with some shapes having inline fill attributes and others inheriting styles from a stylesheet. The SVG uses a transform attribute to scale the entire group, and CSS rules define stroke properties for elements with the `lines` class, including rounded line joins and caps. Rendering relies on native SVG elements and CSS styling, with no external JavaScript libraries.