This example demonstrates how SVG shapes and colors can be styled entirely with CSS, using thin, rounded paths on a dark teal background. The page loads an empty HTML body and relies on an external stylesheet to define stroke properties, including width, line joins, and line caps, for all path elements within a `.lines` container. The specific libraries or data sources are not visible in the provided code; instead, the focus is on the minimal interplay between inline SVG structure and cascading style rules.