Final tweaks to Bombe svg and preloader css

src/web/stylesheets/preloader.css

@@ -160,12 +160,3 @@
         transform: translate3d(0, 200px, 0);
     }
 }
-
-@keyframes fadeIn {
-    from {
-        opacity: 0;
-    }
-    to {
-        opacity: 1;
-    }
-}