#4: add base template; extend base template in views

templates/registration/login.html

@@ -1,7 +1,13 @@
-<h2>Login</h2>
+{% extends "base.html" %}
 
-<form method="POST">
-    {% csrf_token %}
-    {{ form.as_p }}
-    <button type="submit">Login</button>
-</form>
+{% block title %}Login{% endblock %}
+
+{% block content %}
+    <h2>Login</h2>
+
+    <form method="POST">
+        {% csrf_token %}
+        {{ form.as_p }}
+        <button type="submit">Login</button>
+    </form>
+{% endblock %}