diff --git a/app/views/layouts/sign_in.html.erb b/app/views/layouts/sign_in.html.erb
index 0cd3855..367df5c 100644
--- a/app/views/layouts/sign_in.html.erb
+++ b/app/views/layouts/sign_in.html.erb
@@ -12,7 +12,10 @@
   <%= csrf_meta_tags %>
 </head>
 
-<body class="bg-light">
+<body class="fixed-nav bg-light">
+  <nav class="navbar navbar-expand-lg navbar-light bg-light fixed-top" id="mainNav">
+    <%= link_to fluentd_ui_logo, root_path, class: "navbar-brand fluentd-ui-logo" %>
+  </nav>
   <div class="container">
     <%= yield %>
   </div>
