first commit

core/templates/pages/error-404.html

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+
+{% block title %} Error 404 {% endblock title %}
+
+<!-- Specific CSS goes HERE -->
+{% block stylesheets %}{% endblock stylesheets %}
+
+{% block content %}
+
+    <!-- Page content -->
+    <div class="container mt--8 pb-5">
+      <div class="row justify-content-center">
+        <div class="col-lg-5 col-md-7">
+          <div class="card bg-secondary shadow border-0">
+            <div class="card-header bg-transparent pb-5">
+
+              <div class="text-muted bg-transparent text-center mt-2 mb-3">
+                <h2> Oops! Error 404</h2>
+              </div>
+
+              <div class="text-center mb-4">
+                Page not found
+              </div>
+
+            </div>
+          </div>
+        </div>
+      </div>
+    </div>
+
+{% endblock content %}
+
+<!-- Specific JS goes HERE --> 
+{% block javascripts %}{% endblock javascripts %}