diff --git a/modules/basic-theme/src/Volo.Abp.AspNetCore.Components.Web.BasicTheme/wwwroot/libs/abp/css/theme.css b/modules/basic-theme/src/Volo.Abp.AspNetCore.Components.Web.BasicTheme/wwwroot/libs/abp/css/theme.css
index c10092d28f..46d2aaf139 100644
--- a/modules/basic-theme/src/Volo.Abp.AspNetCore.Components.Web.BasicTheme/wwwroot/libs/abp/css/theme.css
+++ b/modules/basic-theme/src/Volo.Abp.AspNetCore.Components.Web.BasicTheme/wwwroot/libs/abp/css/theme.css
@@ -41,15 +41,6 @@
     box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075) !important;
 }
 
-@media screen and (min-width: 768px) {
-    .navbar .dropdown:hover > .dropdown-menu {
-        display: block;
-    }
-
-    .navbar .dropdown-submenu:hover > .dropdown-menu {
-        display: block;
-    }
-}
 .input-validation-error {
     border-color: #dc3545;
 }