python-gallery/gallery/templates/error.html

{% extends 'layout.html' %}

{% block header %}
    <div class="background-decoration">
        <img src="{{ url_for('static', filename='images/background.svg') }}" onload="imgFade(this)" style="opacity:0;"/>
        <span></span>
    </div>
{% endblock %}

{% block content %}
    <h1>{{error}}</h1>
    <p>{{msg}}</p>
{% endblock %}