diff --git a/src/tjts5901/app.py b/src/tjts5901/app.py
index 09bcb2ff81bc758e63207836faac4f5948622642..718e27eea91487e924120de445404ae7e1824858 100644
--- a/src/tjts5901/app.py
+++ b/src/tjts5901/app.py
@@ -36,7 +36,7 @@ def create_app(config: Optional[Dict] = None) -> Flask:
 
     flask_app.config.from_mapping(
         SECRET_KEY='dev',
-        BRAND="Frozen auction page",
+        BRAND="The Frozen Auction",
     )
 
     init_logging(flask_app)
diff --git a/src/tjts5901/templates/base.html b/src/tjts5901/templates/base.html
index a6315a9d37af4903a7a0e03b3ed26debbc748ca8..90620a4fffab7b030b9c7659f25542a0ac9c3ca4 100644
--- a/src/tjts5901/templates/base.html
+++ b/src/tjts5901/templates/base.html
@@ -11,6 +11,37 @@
     <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@4.6.2/dist/css/bootstrap.min.css" integrity="sha384-xOolHFLEh07PJGoPkLv1IbcEPTNtaed2xpHsD9ESMhqIYd0nLMwNLD69Npy4HI+N" crossorigin="anonymous">
     <link rel="stylesheet" href="{{ url_for('static', filename='styles.css') }}">
 
+    <nav class="navbar navbar-expand-lg navbar-dark bg-dark">
+      <a class="navbar-brand" href="{{url_for('views.index')}}">{{config['BRAND']}}</a> 
+     <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarColor01"
+       aria-controls="navbarColor01" aria-expanded="false" aria-label="Toggle navigation">
+       <span class="navbar-toggler-icon"></span>
+     </button>
+   
+     <div class="collapse navbar-collapse" id="navbarTogglerDemo03">
+       """
+       <ul class="navbar-nav mr-auto">
+         <li class="nav-item active">
+           <a class="nav-link" href="{{ url_for('views.list_bid') }}">Buy</a>
+         </li>
+         <li class="nav-item">
+           <a class="nav-link" href="{{ url_for('views.add_item') }}">Sell</a>
+         </li>
+       </ul>
+       """
+       <ul class="navbar-nav">
+         {% if g.user %}
+         <li class="nav-item"><span>{{ g.user['username'] }}</span></li>
+         <li class="nav-item"><a href="{{ url_for('auth.profile', email='me') }}" class="nav-link">My pro</a></li>
+         <li class="nav-item"><a href="{{ url_for('auth.logout') }}" class="nav-link">Log Out</a></li>
+         {% else %}
+         <li class="nav-item"><a href="{{ url_for('auth.register') }}" class="nav-link">Register</a>
+         <li class="nav-item"><a href="{{ url_for('auth.login') }}" class="nav-link">Log In</a>
+           {% endif %}
+       </ul>
+     </div>
+   </nav>
+
   </head>
   <body class="bg-secondary">