solidity/docs/_templates/versions.html

{# Add rst-badge after rst-versions for small badge style. #}
<div class="rst-versions" data-toggle="rst-versions" role="note" aria-label="versions">
    <span class="rst-current-version" data-toggle="rst-current-version">
    {% for type, url in downloads %}
        {% if type == 'PDF' %}
            <a href="{{ url }}">{{ type }}</a>
        {% endif %}
    {% endfor %}

    <span class="fa fa-element">
    <input class="container_toggle" type="checkbox" id="switch" name="mode">
    <label for="switch"></label>
    </span>

    <span class="fa fa-v fa-element"> v: {{ current_version }} <span class="fa fa-caret-down"></span></span>

    </span>
    <div class="rst-other-versions">
        <dl>
            <dt>{{ _('Downloads') }}</dt> {% for type, url in downloads %}
            <dd><a href="{{ url }}">{{ type }}</a></dd>
            {% endfor %}
        </dl>
        <dl>
            <dt>{{ _('Versions') }}</dt> {% for slug, url in versions %}
            <dd><a href="{{ url }}">{{ slug }}</a></dd>
            {% endfor %}
        </dl>
        <dl>
            {# Translators: The phrase "Read the Docs" is not translated #}
            <dt>{{ _('On Read the Docs') }}</dt>
            <dd>
                <a href="//{{ PRODUCTION_DOMAIN }}/projects/{{ slug }}/?fromdocs={{ slug }}">{{ _('Project Home') }}</a>
            </dd>
            <dd>
                <a href="//{{ PRODUCTION_DOMAIN }}/builds/{{ slug }}/?fromdocs={{ slug }}">{{ _('Builds') }}</a>
            </dd>
        </dl>
    </div>
</div>