{% macro make_header(session) %}
<div id="header">
    <a class="header_element" href="/">Etiquette</a>
    <a class="header_element" href="/search">Search</a>
    <a class="header_element" href="/tags">Tags</a>
    {% if session %}
    <a class="header_element" href="/user/{{session.user.username}}">{{session.user.username}}</a>
    <a class="header_element" href="/logout" style="flex:0">Logout</a>
    {% else %}
    <a class="header_element" href="/login">Log in</a>
    {% endif %}
</div>
{% endmacro %}