This example demonstrates basic SVG shapes—circles, rectangles, lines, and a polyline—styled with CSS classes and inline attributes. It uses SVG elements directly in the HTML, with a `<g>` group applying a scale transform and another group applying a translation and shared fill and stroke properties. The CSS defines stroke colors, widths, and line join/cap styles for the `.lines` class and its path. No external libraries are used; rendering relies entirely on native SVG and CSS.