This visualization reproduces a Sol LeWitt art piece, displaying a grid of thin horizontal and vertical lines that intersect only within a central circular region. The code creates an SVG canvas and uses two SVG masks (`circle-mask` and `circle-mask-2`) with inverted fills to control which rectangles are visible. One set of 100 horizontal strips is clipped by a white circle on a black mask, while another set of 100 vertical strips is clipped by a black circle on a white mask, producing a layered crosshatch effect inside the circle. The full-window black and white rectangles are rendered in plain HTML5 SVG without any external libraries.