This example demonstrates a collection of geometric shapes rendered as SVG elements, styled with CSS. The page uses D3.js version 5 to manage SVG creation, though the body starts empty and shapes would be appended dynamically. The stylesheet sets the body margin and hides overflowing content, creating a clean canvas for the visual elements. The rendering approach relies on standard SVG primitives and CSS styling rather than canvas or WebGL, making it a lightweight demonstration of vector-based visualization within a React-free, minimal HTML structure.