This example displays 100 horizontal SVG rectangles stacked vertically, each rendered with varying heights and widths across the viewport. The code uses D3’s `select` method to append an SVG element to the body and sets its dimensions from `window.innerWidth` and `window.innerHeight`. Inside a loop, it creates each rectangle via `document.createElementNS`, setting attributes for positioning and size, and appends them directly to the SVG using `appendChild`. The visualization shows a striped pattern of bars without any interactivity or data binding.