some more changes

package.json

@@ -27,6 +27,7 @@
     "@angular/service-worker": "~8.0.1",
     "@types/leaflet": "^1.5.1",
     "bootstrap-scss": "^4.3.1",
+    "classlist.js": "^1.1.20150312",
     "esri-leaflet": "^2.3.0",
     "firebase": "^6.3.0",
     "hammerjs": "^2.0.8",
@@ -37,6 +38,7 @@
     "leaflet-rotatedmarker": "^0.2.0",
     "rxjs": "~6.4.0",
     "tslib": "^1.9.0",
+    "web-animations-js": "^2.3.2",
     "zone.js": "~0.9.1"
   },
   "devDependencies": {

src/app/components/animatedBackground/animatedBackground.component.html

@@ -2156,11 +2156,3 @@
             </svg>
     </div>
 </div>
-
-<!-- noise overlay -->
-<div class="noise"></div>
-
-<!-- sprites -->
-<div class="spriteWrap"></div>
-
-<script src="js/sprites.js"></script>

src/polyfills.ts

@@ -19,14 +19,14 @@
  */
 
 /** IE10 and IE11 requires the following for NgClass support on SVG elements */
-// import 'classlist.js';  // Run `npm install --save classlist.js`.
+import 'classlist.js';  // Run `npm install --save classlist.js`.
 
 /**
  * Web Animations `@angular/platform-browser/animations`
  * Only required if AnimationBuilder is used within the application and using IE/Edge or Safari.
  * Standard animation support in Angular DOES NOT require any polyfills (as of Angular 6.0).
  */
-// import 'web-animations-js';  // Run `npm install --save web-animations-js`.
+import 'web-animations-js';  // Run `npm install --save web-animations-js`.
 
 /**
  * By default, zone.js will patch all possible macroTask and DomEvents