Shapes with SVG and HTML
This example demonstrates how SVG and HTML elements can be used together to render geometric shapes on a web page. The visualization uses D3 v5’s `select` function to target an SVG element defined in the HTML, with its height and width extracted via `svg.attr`. A CSS class called `.highlighted` styles certain shapes in red, while the body margin is removed for full-bleed display. The code sets up the foundation for binding data to shape positions, though no explicit rendering or data mapping is visible in the provided files.