This example demonstrates three square elements arranged in a row, alternating between green and white fills, each outlined with a black stroke. The SVG markup defines each rectangle explicitly with x and y coordinates, width and height attributes, and fill colors, while CSS applies a 10-pixel black stroke and a three-second transition on all properties. The visualization uses raw SVG elements within an HTML page, with the body margin set to 150 pixels and overflow hidden, showcasing fundamental vector graphics construction and styling.