Four static black rectangles on a white background approximate a bar chart in a 960-by-500 SVG canvas. The chart shows four bars of decreasing height, with no axes or labels. The code uses plain SVG `<rect>` elements with fixed `x`, `y`, `width`, and `height` attributes, and sets the page to hide overflow via CSS. No JavaScript libraries or data sources are involved, making it a minimal, hand-coded visual mockup.