{"version":"1.0","type":"rich","title":"Black Canvas","description":"A black rectangle fills the entire browser viewport. The example is a minimal demonstration of a full-screen SVG canvas. The code sets the SVG's `width` and `height` attributes to the dimensions of the document's client area, then appends a single `rect` element with a rounded corner radius of 40 pixels. It relies on D3 v5's `select` function to fetch the SVG element and chain attribute modifications, resulting in a clean, static visual that highlights the root SVG element on a fixed, overflow-hidden body.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/a977218f93cf49b0a600de64f297d42c?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}