{"version":"1.0","type":"rich","title":"Untitled","description":"A minimal D3 example demonstrates a simple color transition on a black square. The visualization shows a single `div` element changing its background color from black to red over ten seconds. The code uses D3 v4’s selection and transition API, calling `d3.select` and `.transition().duration().style()` to animate the style property. The page also includes a video tutorial link and a separate `index.js` file that imports `select` from D3 v7 to write text into the body, though this script is not referenced in the HTML.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/770742401597405597c559c2702ad0f6?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}