head block jinja code example

Example 1: jinja inheritance

<!DOCTYPE html>
<html lang="en">
<head>
    {% block head %}
    <link rel="stylesheet" href="style.css" />
    <title>{% block title %}{% endblock %} - My Webpage</title>
    {% endblock %}
</head>
<body>
    <div id="content">{% block content %}{% endblock %}</div>
    <div id="footer">
        {% block footer %}
        © Copyright 2008 by <a href="http://domain.invalid/">you</a>.
        {% endblock %}
    </div>
</body>
</html>

Example 2: flask extends two base.html

{% include "base_layout.html" %}
  <div>
  ... // write your code here
  </div>
{% block body %}{% endblock %}