This visualization recreates a Sol LeWitt-inspired geometric composition using two overlapping grids of vertical and horizontal bars. The bars are partially revealed through circular masks, creating a cross-shaped aperture effect at the center of the canvas. The code uses D3 v7’s `select`, `range`, and `join` methods to generate SVG rectangles, with two `mask` elements defining the visible circular regions. The artwork spans the full browser window and renders entirely as SVG, with all positioning computed dynamically from `window.innerWidth` and `window.innerHeight`.