garagehq.deuxfleurs.fr/templates/shortcodes/vimeo.html

<div class="vimeo is-flex is-justify-content-center is-align-items-center">
    <iframe
        width="848" height="510"
        title="vimeo-player" 
        src="https://player.vimeo.com/video/{{id}}" 
        frameborder="0" 
        allowfullscreen>
    </iframe>
</div>