diff --git a/Bootstrap.Admin/wwwroot/css/theme.css b/Bootstrap.Admin/wwwroot/css/theme.css
index 376ff27e..7c8f89ba 100644
--- a/Bootstrap.Admin/wwwroot/css/theme.css
+++ b/Bootstrap.Admin/wwwroot/css/theme.css
@@ -12,6 +12,11 @@
     box-shadow: none !important;
 }
 
+.input-group .btn {
+    background-color: #e9ecef;
+    border-color: #ced4da;
+}
+
 .close:focus {
     outline: none;
 }