diff --git a/FO/Views/Shared/Partial/GNB.cshtml b/FO/Views/Shared/Partial/GNB.cshtml
index 9a8c157..103f8d5 100644
--- a/FO/Views/Shared/Partial/GNB.cshtml
+++ b/FO/Views/Shared/Partial/GNB.cshtml
@@ -16,7 +16,7 @@
             </ul>
             <ul class="gnbMenu">
                 @Html.Raw(ViewBag.TopMenuM)
-                <div id="gpBg"></div>
+                <div id="gpBg" class="gnbBg"></div>
             </ul>
         </div>
         <div class="gnbMo">