templates/components/_base.html

<!DOCTYPE html>
<html lang="en">
    
<head>
    {% include 'components/_head.html' %}
    {% block page_head %}{% endblock %}
</head>

<body style="width: 100%; margin: 0; padding: 0; display: flex; 
    flex-direction: column; flex-grow: 1;" class="bg-dark">            

    {% block page_content %}{% endblock %}

    {% include 'components/_scripts.html' %}
    
</body>
</html>