e="button">Show GeoJSON layer bounds</button>
		<button id="featureGroupBounds" type="button">Show feature group bounds</button>
		<script src="geojson-sample.js"></script>
		<script type="module">
			import {TileLayer, Map, GeoJSON, LatLng, Marker, Polyline, FeatureGroup, Rectangle} from 'leaflet';
			import geojsonSample from './geojson-sample.js';

			const osm = new TileLayer('https://tile.openstreetmap.org/{z}/{x}/{y}.png', {maxZoom: 18});
			let rectangle;

			const map = new Map('map', {
				center: 