This example demonstrates basic SVG shape primitives—circles, rectangles, and a line—styled and arranged through inline attributes and CSS. It shows how SVG groups (`<g>`) can apply shared fill colors, strokes, and transforms to multiple shapes at once, while individual elements can override those inherited styles. The code uses raw SVG markup within an HTML document, with no external JavaScript libraries, and relies on a linked stylesheet for overall page typography and layout. The rendering approach is purely static SVG, with all positioning and styling declared directly in the markup.