This example demonstrates the styling and rendering capabilities of SVG shapes and paths in a web browser. The visualization employs CSS classes to apply a consistent black stroke with a width of 10 units to line elements, while path elements within those lines receive a rounded join and cap, plus a teal color (#25656d). The page embeds D3 version 7.8.5 via a CDN link, logging the library to the console. The minimal body and overflow-hidden styles suggest a fullscreen presentation of the geometric elements.