diff --git a/archivist/sites/templates/base.html b/archivist/sites/templates/base.html
new file mode 100644
index 0000000..8c04de1
--- /dev/null
+++ b/archivist/sites/templates/base.html
@@ -0,0 +1,52 @@
+<!-- base.html -->
+
+{% load static %}
+
+<!DOCTYPE html>
+<html lang="en" data-bs-theme="dark">
+<head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <title>{% block title %}Gallery Archivist{% endblock %}</title>
+    <link rel="icon" type="image/x-icon" href="{% static 'img/favicon.png' %}">
+    {% block styles %}
+    {% endblock styles %}
+    <link rel="stylesheet" href="{% static 'libs/bootstrap/bootstrap.min.css' %}">
+    <link rel="stylesheet" href="{% static 'css/main.css' %}">
+</head>
+<body>
+
+    {% include 'navbar.html' %}
+
+    <div class="container-fluid">
+        {% block content %}
+        {% endblock %}
+    </div>
+
+    <div class="modal fade" id="externalLinkConfirmationModal" data-bs-backdrop="static" data-bs-keyboard="false" tabindex="-1" role="dialog" aria-labelledby="externalLinkConfirmationModalLabel" aria-hidden="true">
+        <div class="modal-dialog modal-dialog-centered modal-dialog-scrollable" role="document">
+            <div class="modal-content">
+                <div class="modal-header bg-danger">
+                    <h5 class="modal-title" id="externalLinkConfirmationModalLabel">Confirmation</h5>
+                    <button type="button" class="btn-close btn-close-white" data-bs-dismiss="modal" aria-label="Close"></button>
+                </div>
+                <div class="modal-body">
+                    <p>You are leaving this site and visiting an external link. Do you want to proceed?</p>
+                    <p id="externalLinkShow"></p>
+                </div>
+                <div class="modal-footer bg-warning">
+                    <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Cancel</button>
+                    <a id="externalLink" href="#" target="_blank" rel="noopener noreferrer" class="btn btn-primary">Proceed</a>
+                </div>
+            </div>
+        </div>
+    </div>
+
+    {% include 'footer.html' %}
+
+{% block scripts %}
+{% endblock %}
+<script src="{% static 'js/confirm_external_links.js' %}"></script>
+<script src="{% static 'libs/bootstrap/bootstrap.bundle.min.js' %}"></script>
+</body>
+</html>
