site/_src/_includes/cookie-banner.html

<div class="cookie-banner" id="cookies-eu-banner" style="display: none;">
    <p>
        {{ site.data.gdpr.cookies }}
        <a href="{% link privacy.md %}" id="cookies-eu-more">Read more</a>
    </p>
    <p>
        <button class="btn btn-xs btn-secondary" id="cookies-eu-accept">Accept</button>
        <button class="btn btn-xs btn-link" id="cookies-eu-reject">Reject</button>
    </p>
</div>