I'm looking into using the Category Widget in a custom Map, using Carto JS v4.
I've managed to get the data to show up on my map, and Now I want to have a category Widget, like the one you have Carto Builder based maps.
The only example I've found, is on their site, over here: https://carto.com/documentation/cartojs/examples/#example-category-widget
This seems to work, except it doesn't have any UI.
How do I get the widget with UI similar to the one Carto Builder?