This example demonstrates how SVG shapes and colors can be defined and styled using CSS. It shows circles, rectangles, lines, and paths, with some shapes using inline `fill` and `stroke` attributes and others inheriting styles from CSS classes. A group element applies a `translate` transform and sets default `fill` and `stroke` properties, while the CSS rule for the `.lines` class specifies stroke width and color for the line and path elements. The rendering relies entirely on SVG markup, CSS, and transforms.