diff --git a/assets/src/css/style.css b/assets/src/css/style.css
index 32aa28117..6cb3e9fc3 100755
--- a/assets/src/css/style.css
+++ b/assets/src/css/style.css
@@ -38,8 +38,26 @@
     color: #000;
 }
 
-.preloader{
-    background-color: #f4f6f9de ;
+#main_loading {
+    display: block;
+    position: fixed;
+    top: 0;
+    left: 0;
+    width: 100%;
+    height: 100%;
+    background-color: rgba(255, 255, 255, 0.7);
+    z-index: 9999;
+}
+
+#main_loading > img {
+    position: fixed;
+    top: 50%;
+    left: 50%;
+    width: 60px;
+    height: 60px;
+    margin-top: -30px;
+    margin-left: -30px;
+    z-index: 9999;
 }
 
 html {
@@ -214,25 +232,15 @@ a:focus {
 }
 
 
-#mini-loader {
-    position: fixed;
-    top: 0;
-    left: 0;
-    z-index: 9000;
-    width: 100%;
-    height: 100%;
-    background: rgba(0, 0, 0, 0.15);
-}
-
-#mini-loader>div {
+#mini-loader > div{
     position: fixed;
     bottom: 20px;
-    left: auto;
     right: 20px;
-    width: 100px;
-    height: 100px;
     margin-top: -50px;
     margin-left: -50px;
+    z-index: 9000;
+    width: 100px;
+    height: 100px;
     background: transparent url(../img/ajax-loader.gif) top left no-repeat;
 }
 
@@ -473,7 +481,7 @@ span.form-control {
 
 .select2-search,
 .select2-search__field {
-    width: 100%;
+    width: 100% !important;
 }
 
 .select2-results__option[aria-selected=true] {
diff --git a/assets/src/js/base/custom.js b/assets/src/js/base/custom.js
index 075b3cc16..986db2896 100644
--- a/assets/src/js/base/custom.js
+++ b/assets/src/js/base/custom.js
@@ -18,7 +18,7 @@
 
 // Aggiunta dell'ingranaggio all'unload della pagina
 $(window).on("beforeunload", function () {
-    $("#main_loading").css('height', '100vh').find('img').show().removeClass('animation__shake').addClass('animation__shake');
+    $("#main_loading").show().find('img').show().removeClass('animation__shake').addClass('animation__shake');
 });
 
 // Fix multi-modal
@@ -100,6 +100,7 @@ $(document).ready(function () {
 
     alignMaxHeight(".module-header .card");
 
+    $("#main_loading").fadeOut()
 });
 
 /*
diff --git a/include/top.php b/include/top.php
index 7232417f8..be6aacb9d 100755
--- a/include/top.php
+++ b/include/top.php
@@ -365,7 +365,7 @@ if (Auth::check()) {
     echo '
             <!-- Loader principale -->
 			<!-- Preloader -->
-            <div id="main_loading" class="preloader flex-column justify-content-center align-items-center">
+            <div id="main_loading" class="flex-column justify-content-center align-items-center">
                 <img class="animation__shake" src="'.$rootdir.'/assets/dist/img/logo.png" alt="OSM" height="60" width="60">
             </div>