diff --git a/test/BlazorServerSide/AbpBlazorServerDemo/Pages/_Host.cshtml b/test/BlazorServerSide/AbpBlazorServerDemo/Pages/_Host.cshtml
index a1fd72bec6..58aee68a3c 100644
--- a/test/BlazorServerSide/AbpBlazorServerDemo/Pages/_Host.cshtml
+++ b/test/BlazorServerSide/AbpBlazorServerDemo/Pages/_Host.cshtml
@@ -17,6 +17,7 @@
     <link href="_content/Blazorise/blazorise.css" rel="stylesheet" />
     <link href="_content/Blazorise.Bootstrap/blazorise.bootstrap.css" rel="stylesheet" />
     <link href="_content/Blazorise.Snackbar/blazorise.snackbar.css" rel="stylesheet" />
+    <link href="_content/Volo.Abp.AspNetCore.Components.UI.BasicTheme/libs/abp/css/theme.css" rel="stylesheet" />
     <link href="css/site.css" rel="stylesheet" />
     <link href="AbpBlazorServerDemo.styles.css" rel="stylesheet" />
 </head>