This example demonstrates basic SVG shape creation and styling using raw SVG elements (circle and rect) combined with CSS. The visualization renders two rows of shapes inside a single SVG container, with the first row showing default black shapes and the second row introducing fill colors and CSS class-based highlighting. The code uses inline SVG attributes like cx, cy, r, width, height, x, and y, along with a g transform to reposition the entire second group. A linked stylesheet applies global resets and a red text highlight class, though no data is loaded—the shapes are hardcoded directly in the HTML.