InvenTree/docs/_includes/overrides/partials/version_banner.html

{% if config.version_banner %}
<div class='alert alert-warning alert-dismissable alert-version' role='alert'>
    <div class='md-grid md-typeset'>
        <small>
        {% if config.readthedocs.version == 'latest' %}
            This documentation is for the <em>development</em> version of InvenTree, which may be significantly different from the stable releases.
        {% else %}
            This documentation is for an outdated version of InvenTree.
        {% endif %}
        For <em>stable</em> release documentation, use the version selector located in the bottom right corner of this page.
        </small>
        <button type="button" class="close" data-dismiss="alert" aria-label="Close"><span aria-hidden="true">&times;</span></button>
    </div>
</div>
{% endif %}