add bg image v16

Author: input-api

js/main.js

@@ -4,4 +4,14 @@ menuItems.forEach(function(menuItem) {
     menuItem.addEventListener('click', function() {
         menuItem.classList.toggle('details');
     });
-});
+});
+
+document.addEventListener("resize", function() {
+    var windowWidth = window.innerWidth;
+    var windowHeight = window.innerHeight;
+    var backgroundSection = document.querySelector('#bg_image');
+
+    backgroundSection.style.width = windowWidth + 'px';
+    backgroundSection.style.height = windowHeight + 'px';
+});
+