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 db728eed11..c10092d28f 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
@@ -170,9 +170,9 @@ div.dataTables_wrapper div.dataTables_length label {
 }
 
 h1.content-header-title{
-    font-size: 1.5rem;
+    font-size: 1.5em;
 }
 
 .b-table h4.h4 {
     text-align: center;
-}
\ No newline at end of file
+}