This visualization recreates Sol LeWitt’s art using D3 version 6.6.1 to draw a grid of horizontal and vertical SVG rectangles. Two overlapping masks, defined via `mask` and `circle` elements, reveal the rectangular marks only inside a large central circle, creating a crosshatched pattern that fades into empty space. The code uses `d3.select`, `range`, and `join` to generate the shapes dynamically based on the viewport dimensions.