Below are my codes:
includes/html_head.html
<head>
<title>{% block page_title %}{% endblock page_title %}</title>
</head>
base.html
<!DOCTYPE html>
<html lang="en">
{% include "includes/html_head.html" %}
<body>
<h1>Hello World!</h1>
</body>
</html>
index.html
{% extends "base.html" %}
{% block page_title %}
My Page Title
{% endblock page_title %}
How can I have a separate html_head.html file but still can override the title tag?