localized spinner support

front/css/app.css

@@ -2093,10 +2093,10 @@ input[readonly] {
 #loadingSpinner {
     position: fixed;
     z-index: 1000;
-    top: 0;
-    left: 0;
-    width: 100%;
-    height: 100%;
+    /* top: 0; */
+    /* left: 0; */
+    /* width: 100%; */
+    /* height: 100%; */
     opacity: 0;
     transition: opacity 0.3s ease-in-out;
     pointer-events: none;