Add burger + some map responsiveness

js/index.js

@@ -7,5 +7,6 @@ document.addEventListener('DOMContentLoaded', async () => {
 
     UI.addCenterMapControl(map, GIS.CENTER_COORDS, GIS.INIT_ZOOM);
     UI.toggleMenu('siti');
+    UI.toggleBurger('navbar-burger');
     UI.sitesMenu('.menu-list', map, sites);
 });

js/ui.js

@@ -40,6 +40,14 @@ UI.addCenterMapControl = function (map, centerCoords, zoom) {
     let centerCtr = new L.Control.CenterControl();
     map.addControl(centerCtr);
 }
+UI.toggleBurger = function(burgerClass) {
+	const burger = document.querySelector(`.${burgerClass}`);
+	burger.addEventListener('click', () => {
+		burger.classList.toggle('is-active');
+		const menuId = burger.getAttribute('data-target');
+		document.querySelector(`#${menuId}`).classList.toggle('is-active');
+	});
+}
 /**
  * 
  * @param {string} triggerId The ID of the trigger element