This example shows basic SVG shapes—circles, rectangles, lines, and paths—styled with CSS classes and inline attributes. It combines default black fill, explicit colors like red and green, and a grouped set with a light blue fill and black stroke. The rendering uses raw SVG elements within an HTML page, with CSS controlling stroke properties such as width, line join, and cap. The `<g>` elements apply transformations including scaling and translation, while the `.lines` class defines stroke behavior for line and path elements.