1. base.html

{% extends "bootstrap/base.html" %}{% block title %} Flasky {% endblock %}{% block navbar %}
<div class="navbar navbar-inverse" role="navigation">
    <div class="container">
        <div class="navbar-header">
            <button type="button" class="navbar-toggle"
 

            data-toggle="collapse" data-target=".navbar-collapse">
                <span class="sr-only">Toggle navigation</span>
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
                <span class="icon-bar"
 
></span>
            </button>
            <a class="navbar-brand" href="/">Flasky</a>
        </div>
        <div class="navbar-collapse collapse">
            <ul class="nav navbar-nav">
                <li><a href="/">Home</a></li>
            </ul
 
>
        </div>
    </div>
</div>
{% endblock %}{% block content %}
<div class="container">
    {% block page_content %}{% endblock %}
</div>
{% endblock %}
            # 這段空內容也很重要，絕非可有可無；

2. 兩個基於此基模板的拓展

2.1 404.html

{% extends "base.html" %}{% block title %} Flasky - Page Not Found {% endblock %}{% block page_content %}
    <div class="page-header">
        <h1>Not Found</h1>
    </div>
{% endblock %}

2.2 user.html

{% extends "base.html" %}{% block title %} Flasky {% endblock %}{% block page_content %}
    <div class="page-header">
        <h1>Hello, {{name}}!</h1>
    </div>
{% endblock %}