{"version":"1.0","type":"rich","title":"Fork of Hello HTML","description":"An SVG mask with a black circle on a white rectangle reveals a grid of vertical and horizontal strips that fill the viewport. The plain HTML and JavaScript create 100 rect elements along each axis, applying the circular mask via the `mask` attribute. This simple code demonstrates SVG mask manipulation without external libraries, rendering a clean circular window into a striped pattern across the full browser window.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/d99c8c2c5266448ca265aaf0eed4dcfe?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}