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This example demonstrates basic SVG shape rendering and grouping with D3 v7. It shows circles, rectangles, lines, and a path arranged in three groups, each with different fill colors, stroke styles, and transform translations. The code uses SVG elements directly, applying group transforms like `translate` and `scale`, while CSS classes define stroke properties for the line elements. The visualization serves as a minimal starter template, illustrating how D3 integrates with static SVG markup and CSS styling without data binding or dynamic scales.