Fix campi personalizzati

add.php

@@ -62,10 +62,6 @@ $(document).ready(function(){
         last = form.find(".box").last();
     }
 
-    if (!last.length) {
-        last = form.find(".card").last();
-    }
-
     if (!last.length) {
         last = form.find(".row").eq(-2);
     }

editor.php

@@ -282,7 +282,7 @@ if (empty($record) || !$has_access) {
                 }
 
                 if (!last.length) {
-                    last = form.find(".row").eq(-2);
+                    last = form.find(".row").last();
                 }
 
                 // Campi a inizio form

src/HTMLBuilder/Manager/FieldManager.php

@@ -99,7 +99,7 @@ class FieldManager implements ManagerInterface
                 }
 
                 $result .= '
-            <div class="col-xs-4">
+            <div class="col-md-4">
                 '.$field['content'].'
             </div>';