This example shows a basic world map rendered with a Natural Earth projection, featuring landmasses, a graticule, and country borders. It uses `d3.geoNaturalEarth1` and `d3.geoPath` to project and draw geographic features from TopoJSON data loaded via `topojson-client` from the visionscarto-world-atlas package. The map auto-fits to the window size on initialization, and styling is handled through CSS classes for the sphere, graticule, land, and country mesh elements.