This example demonstrates how to combine SVG shapes with CSS styling and D3.js version 7. It shows circles, rectangles, lines, and paths rendered in an SVG canvas, with CSS classes controlling stroke properties like color and width. The code uses d3.select to insert text into the page, while the SVG elements themselves rely on standard SVG attributes for positioning and fills. A second SVG contains a single line element with inline stroke styling. The example highlights how CSS can be applied to SVG elements through class selectors.