Приклеил навбар к верху.

templates/base.html

@@ -17,6 +17,7 @@
         /* Page background: RAL 1013 (Oyster white) — approximate hex */
         body {
             background-color: #EDE6D1;
+            padding-top: 70px; /* leave space for fixed navbar */
         }
     </style>
     {% block extra_css %}{% endblock %}

templates/components/navbar.html

@@ -1,5 +1,5 @@
 <!-- templates/components/navbar.html -->
-<nav class="navbar navbar-expand-lg navbar-dark bg-dark">
+<nav class="navbar navbar-expand-lg navbar-dark bg-dark fixed-top">
     <div class="container">
         <a class="navbar-brand" href="{% url 'home' %}">Мой проект</a>
         <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNav">