Shapes with SVG and CSS
This example demonstrates basic SVG shapes—circles, rectangles, lines, and paths—arranged in a grid and styled through CSS classes and inline attributes. It shows how presentation properties like fill, stroke, stroke-width, and transforms (scale, translate) apply both directly and via stylesheet rules. The visualization loads D3.js from UNPKG and uses its `select` API to inject a message into an HTML element, while a local ES6 module supplies the text. Rendering relies entirely on SVG markup within the HTML file, with CSS controlling the appearance of grouped elements.