site/_src/_includes/testimonials.html

<article class="testimonials grid grid--full grid-medium--fit grid--gutters">

    {% for testimonial in site.data.testimonials %}

    <div class="grid__col">
        <figure class="testimonial">

            <blockquote class="testimonial__quote">{{ testimonial.quote }}</blockquote>

            <figcaption class="testimonial__caption">
                <img class="testimonial__avatar" src="{{ testimonial.image }}">
                <cite class="testimonial__cite">
                    <span class="testimonial__name">{{ testimonial.name }}</span>
                    <span class="testimonial__org"><a href="{{ testimonial.link }}">{{ testimonial.org }}</a></span>
                </cite>
            </figcaption>
        </figure>
    </div>

    {% endfor %}

</article>