diff --git a/CMS_SC/Collaudi.aspx b/CMS_SC/Collaudi.aspx
index c9b05ef..ae1ca08 100644
--- a/CMS_SC/Collaudi.aspx
+++ b/CMS_SC/Collaudi.aspx
@@ -11,7 +11,7 @@
 <asp:Content ID="Content3" ContentPlaceHolderID="MainContent" runat="server">
     <div class="container-flow">
         <div class="row" style="margin: 0 5px;">
-            <div runat="server" id="divStato" class="col-xs-4" style="font-size: 0.8em;">
+            <div runat="server" id="divStato" class="col-md-6 col-lg-4" style="font-size: 0.8em;">
                 <div class="row panel panel-default">
                     <div class="panel-heading">
                         <div class="row">
@@ -41,7 +41,7 @@
                     </div>
                 </div>
             </div>
-            <div runat="server" id="divMain" class="col-xs-4" style="font-size: 0.9em;">
+            <div runat="server" id="divMain" class="col-md-3 col-lg-4" style="font-size: 0.9em;">
                 <div class="row panel panel-info">
                     <div class="panel-heading">
                         <div class="row">
@@ -67,7 +67,7 @@
                     </div>
                 </div>
             </div>
-            <div runat="server" id="divHist" class="col-xs-4" style="font-size: 0.8em;">
+            <div runat="server" id="divHist" class="col-md-3 col-lg-4" style="font-size: 0.8em;">
                 <div class="row panel panel-warning">
                     <div class="panel-heading">
                         <div class="row">
diff --git a/CMS_SC/Collaudi.aspx.cs b/CMS_SC/Collaudi.aspx.cs
index 73e7eba..8170159 100644
--- a/CMS_SC/Collaudi.aspx.cs
+++ b/CMS_SC/Collaudi.aspx.cs
@@ -198,7 +198,7 @@ namespace CMS_SC
             if (showHist)
             {
                 // imposto css x mostrare 2 blocchi
-                divMain.Attributes.Add("class", "col-xs-4");
+                divMain.Attributes.Add("class", "col-md-3 col-lg-4");
                 btnShowHideHist.Text = traduci("btnHideHist");
                 divHist.Visible = true;
                 // sistemo dati storici
@@ -210,7 +210,7 @@ namespace CMS_SC
             else
             {
                 // imposto css x mostrare solo blocco corrente e nascondo altro...
-                divMain.Attributes.Add("class", "col-xs-8");
+                divMain.Attributes.Add("class", "col-md-6 col-lg-8");
                 btnShowHideHist.Text = traduci("btnShowHist");
                 divHist.Visible = false;
             }