diff --git a/src/packages/__VUE/menu/index.scss b/src/packages/__VUE/menu/index.scss
index 6daedc1b91..e7fb69f4c1 100644
--- a/src/packages/__VUE/menu/index.scss
+++ b/src/packages/__VUE/menu/index.scss
@@ -23,7 +23,10 @@
     display: flex;
     line-height: $menu-bar-line-height;
     background-color: $white;
-    box-shadow: $menu-bar-box-shadow;
+
+    &:not(.opened) {
+      box-shadow: $menu-bar-box-shadow;
+    }
 
     &.opened {
       z-index: $menu-bar-opened-z-index;
diff --git a/src/packages/__VUE/menuitem/index.scss b/src/packages/__VUE/menuitem/index.scss
index b1e828e159..f2473792e0 100644
--- a/src/packages/__VUE/menuitem/index.scss
+++ b/src/packages/__VUE/menuitem/index.scss
@@ -10,7 +10,7 @@
 
 .nut-menu-item {
   position: fixed;
-  z-index: $menu-bar-opened-z-index;
+  z-index: calc($menu-bar-opened-z-index - 1);
   left: 0;
   right: 0;
   height: 100vh;
@@ -55,6 +55,6 @@
   position: fixed;
   left: 0;
   right: 0;
-  z-index: $menu-bar-opened-z-index;
+  z-index: calc($menu-bar-opened-z-index - 1);
   background-color: transparent;
 }