This example demonstrates how to create basic geometric shapes and style them using pure SVG and CSS. It shows circles, rectangles, lines, and a polyline path, with solid fills and black strokes. The SVG elements are grouped and transformed using `scale` and `translate` operations. CSS classes, such as `.lines`, add stroke styling and round line joins to paths. The rendering relies on inline SVG attributes and a linked stylesheet, producing a simple gallery of colored shapes on a fixed 960x500 canvas.