diff --git a/packages/toast-ui.grid/src/css/grid.css b/packages/toast-ui.grid/src/css/grid.css
index 46784d19f..992193f51 100644
--- a/packages/toast-ui.grid/src/css/grid.css
+++ b/packages/toast-ui.grid/src/css/grid.css
@@ -402,8 +402,8 @@
   left: 1px;
 }
 .tui-grid-rside-area {
+  position: relative;
   display: none;
-  overflow: hidden;
 }
 .tui-grid-rside-area .tui-grid-header-area,
 .tui-grid-rside-area .tui-grid-summary-area {