Simple way to create a slideshow with Twig and a for loop?

I have this code, which is basically a loop in a Twig template where I show opinions:

<section class="opinions">
    <h2 class="opinions__title heading2">
        Opiniones de otros guardianes
    </h2>
    <ul class=" row md-12 center-md">
        <li class="col md-3">
        {% for opinion in opiniones %}
            <blockquote class="opinion__blq simple-bubble text-large">
                {{ opinion.opinion }}
            </blockquote>
            <p>
                {{ opinion.autor }}
            </p>
            <p>
                {{ opinion.ciudad }}
            </p>
        {% endfor %}
        </li>
    </div>
</section>

I’d like to create a simple slideshow to show these 3 opinions. I’ve tried with diferent methods but they don’t work. Does someone know a simple, easy way to do it? Thanks.