Modified files
tailwind.config.js
--- 
+++ 
@@ -2,7 +2,11 @@
 module.exports = {
   content: ["./templates/**/*.html"],
   theme: {
-    extend: {},
+    extend: {
+      boxShadow: {
+        underline: "inset 0 -2px 0 0"
+      }
+    },
   },
   plugins: [],
 }
templates/app/base.html
                    --- 
+++ 
@@ -13,18 +13,18 @@
 <body>
   <nav class="px-10 py-4 border-b border-gray-300 shadow-md">
     <div class="flex justify-end items-center gap-6 max-w-7x mx-auto">
-      {% if user.is_authenticated %}
-      <a class="button primary" href="{% url 'create_article' %}">Create new</a>
-      <a class="" href="{% url 'home' %}">Articles</a>
-      <a class="" href="{% url 'account_email' %}">Change email</a>
-        <form method="POST" action="{% url 'account_logout' %}">
-          {% csrf_token %}
-          <button type="submit">Log out</button>
-        </form>
-      {% else %}
-        <a class="button secondary text-sm" href="{% url 'account_login' %}">Log in</a>
-        <a class="button primary text-sm" href="{% url 'account_signup' %}">Sign up</a>
-      {% endif %}
+        {% if user.is_authenticated %}
+        <a class="button primary" href="{% url 'account_signup' %}">Create new</a>
+        <a class="hover:shadow-underline hover:shadow-gray-300" href="{% url 'home' %}">Articles</a>
+        <a class="hover:shadow-underline hover:shadow-gray-300" href="{% url 'account_email' %}">Change email</a>
+          <form method="POST" action="{% url 'account_logout' %}">
+            {% csrf_token %}
+            <button class="hover:shadow-underline hover:shadow-gray-300" type="submit">Log out</button>
+          </form>
+        {% else %}
+          <a class="button secondary text-sm" href="{% url 'account_login' %}">Log in</a>
+          <a class="button primary text-sm" href="{% url 'account_signup' %}">Sign up</a>
+        {% endif %}
     </div>
   </nav>
   {% block content %}