layout base en twig

base.html.twig

{% extends "layout.html.twig" %}
 
{% block base %}
<div id="header">
{% block header %} My WebPage {% endblock %}
</div>
 
<div id="content">
{% block content %}{% endblock %}
 
<aside>
{% block aside %}{% endblock %}
</aside>
</div>
 
<div id="footer">
By me
</div>
{% endblock %}