modInstagram Bootstrap 4 chunk

tpl.modInstagram.item.tpl

{if ($idx - 1) % 3 == 0}
    <div class="row">
{/if}
    <div class="col-12 col-md-4 in-item">
        <div class="card">
            {switch $type}
                {case 'carousel'}
                    <div id="carouselInstagram" class="carousel slide" data-ride="carousel">
                        <div class="carousel-inner">
                            {foreach $carousel as $item}
                                <div class="carousel-item {$item@index == 0 ? 'active' : ''}">
                                    <img class="d-block w-100" src="{$item.images.standard_resolution.url}" alt="">
                                </div>
                            {/foreach}
                        </div>
                        <a class="carousel-control-prev" href="#carouselInstagram" role="button" data-slide="prev">
                            <span class="carousel-control-prev-icon" aria-hidden="true"></span>
                            <span class="sr-only">Предыдущий</span>
                        </a>
                        <a class="carousel-control-next" href="#carouselInstagram" role="button" data-slide="next">
                            <span class="carousel-control-next-icon" aria-hidden="true"></span>
                            <span class="sr-only">Следующий</span>
                        </a>
                    </div>                    
                {case 'video'}
                    <video class="card-img-top" width="100%" controls="controls">
                        <source src="{$video_standard_resolution}" type="video/mp4">
                    </video>
                {case default}
                    <img class="card-img-top" src="{$image_standard_resolution}" alt="">
            {/switch}
        	<div class="card-body">
        		<h5 class="card-title">{$location_name}</h5>
        		<h6 class="card-subtitle mb-2 text-muted">{$created_time | date : 'd.m.Y'}</h6>
        		<p class="card-text">{$caption_text | strip : true | truncate : 100}</p>
        		<a href="{$link}" class="btn btn-primary" target="_blank" rel="nofollow">Подробнее</a>
        	</div>
        </div>
    </div>
{if $idx % 3 == 0}
    </div>
{/if}