Sol LeWitt Reproduction (D3 groups)
This example reproduces a Sol LeWitt art piece using D3 groups to draw two sets of overlapping stripes. One group renders 100 horizontal rectangles, and another draws 100 vertical rectangles, each set filtered through a circular mask. The code uses `select`, `append`, and `join` from D3's API, with the masks defined via `svg.append('mask')` and styled using `rect` and `circle` elements. The artwork dynamically fills the browser window, showcasing a grid-and-circle motif.