diff --git a/customize.dist/src/less2/include/dropdown.less b/customize.dist/src/less2/include/dropdown.less
index 7917f99ee..2bd133d46 100644
--- a/customize.dist/src/less2/include/dropdown.less
+++ b/customize.dist/src/less2/include/dropdown.less
@@ -98,10 +98,6 @@
 
             &.cp-dropdown-submenu {
                 left: 250px;
-                top: 130px;
-            }
-
-            &.cp-dropdown-submenu:nth-last-of-type(1){
                 top: 100px;
             }
 
diff --git a/www/common/common-ui-elements.js b/www/common/common-ui-elements.js
index 34c986cbc..2cc3faf24 100644
--- a/www/common/common-ui-elements.js
+++ b/www/common/common-ui-elements.js
@@ -1690,7 +1690,8 @@ define([
                     $innerblock.css('bottom', button.height+'px');
                 }
             } else if ($parentMenu) {
-                $innerblock.css('max-height', Math.floor(wh - topPos - 400)+'px');
+                let max = $parentMenu.css('max-height');
+                $innerblock.css('max-height', max);
             } else {
                 $innerblock.css('max-height', Math.floor(wh - topPos - 1)+'px');
             }