sources:

    nextzen:

        type: TopoJSON
GeoJSONTopoJSONMVTRaster

        url: https://tile.nextzen.org/tilezen/vector/v1/256/all/{z}/{x}/{y}.topojson

        url_params:

            api_key: d161Q8KATMOhSOcVGNyQ8g

        max_zoom: 16

​

styles:

    _transparent:

        base: polygons
pointslinespolygonstextraster

        blend: overlay
opaqueaddmultiplyoverlayinlaytranslucent

​

layers:

    buildings:

        data: { source: nextzen
nextzen }

        draw:

            _transparent:

                order: 1

                color: [.7, .7, .7, .5]

                extrude: true

​