White and black horizontal and vertical stripes fill the entire browser window, but patterned mask regions interrupt them. Two separate groups of stripes intersect, producing a grid-like texture. The artwork uses D3 selections and joins to generate 100 rectangles in each orientation. A custom `renderMask` function builds two SVG masks, each containing a single D3-symbol shape, to reveal or hide portions of the stripes. The rendering is entirely SVG-based, with D3 v6.6.1 handling data binding and symbol generation.