This example demonstrates how SVG shapes are styled and transformed using CSS and inline attributes. It pairs circles and rectangles with default black fills, red and gray custom fills, and a group inheriting blue fill with black strokes. The code uses SVG elements like `circle`, `rect`, `line`, and `path`, with transformations via `scale` and `translate`. CSS classes like `.lines` define stroke properties, while `.lines path` overrides the stroke color and applies a round line join. The rendering uses inline SVG markup within an HTML document.