flask-boilerplate/app/templates/index.html

{% extends "layout.html" %}

{% block head %}
    {{ super() }}
{% endblock %}

{% block content %}

	<h1 class="ui header">{{ title }}</h1>

	{% if current_user.is_authenticated %}
	  	<h2 class="ui header">Hi {{ current_user.first_name }}!</h2>
	{% endif %}

{% endblock %}