diff --git a/packages/common/style/var.less b/packages/common/style/var.less
index 8a3d537a..dc87687a 100644
--- a/packages/common/style/var.less
+++ b/packages/common/style/var.less
@@ -427,7 +427,7 @@
 @search-action-font-size: @font-size-md;
 
 // Sidebar
-@sidebar-width: 85px;
+@sidebar-width: 80px;
 
 // SidebarItem
 @sidebar-font-size: @font-size-md;