{"version":"1.0","type":"rich","title":"Rectangle Hover","description":"A single red rectangle with a thick black stroke sits centered on a white SVG canvas. When hovered, the rectangle smoothly transitions over four seconds to a purple fill with a much wider stroke. The example demonstrates CSS transitions applied directly to SVG shapes, using the `rect` element with `transition` and `:hover` styles. The rendering relies entirely on native SVG and CSS, with no JavaScript libraries involved beyond a placeholder `console.log`.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/b9cea7c95c564c4a8f7a936c7363304e?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}