A static map of Palghar district blocks is colored by a percentage value from a CSV dataset, with each block labeled and hoverable to reveal tooltip details. A range slider controls the color thresholds, recoloring the map via transitions. The visualization uses D3 v5 with `geoMercator` and `geoPath` for the GeoJSON projection, `d3.slider` for the range input, and SVG rendering for both the map and slider elements.