This visualization displays a grid of 20 colorful rectangles arranged in a responsive layout, where each rectangle’s height and width are fixed but their positions depend on the window width. The SVG renders on a warm beige background, with each shape colored by cycling through a palette of six hues based on the rectangle’s index. The code uses D3 v6 to select the chart container, append an SVG element, and bind data via the `.join()` method. The number of columns is computed from the available width, creating a dynamic arrangement that adapts to the viewport.