A grid of small blue rectangles is generated and drawn into an SVG canvas. The page loads an HTML document that defines a 5000 by 3000 pixel SVG element and uses a JavaScript loop to create each rectangle, setting its position, size, and fill color programmatically via the SVG namespace. The rectangles are arranged in rows and columns, creating a simple, repeating pattern. The visualization relies entirely on the SVG `rect` element and JavaScript DOM manipulation, with no external charting library, and includes a CSS stylesheet for general page styling.