{% macro default(header, icon, subheader) %}
    <div class="header">
        <h1 class="header-title">
            {% if icon is not empty %}
                <i class="fa fa-{{ icon }}"></i>
            {% endif %}
            {{ header }}
        </h1>

        {% if subheader is not empty %}
            <p class="header-subtitle">{{ subheader }}</p>
        {% endif %}
    </div>
{% endmacro %}

