Блок с видео в 3 колонки

HTML

<?php if( have_rows('видео') ): ?>
<div class="video" id="video">
    <div class="container">
        <div class="content-title"><?php the_field('заголовок_блока_видео'); ?></div>
        <div class="flex_block">
            <?php while( have_rows('видео') ): the_row(); ?>
            <a class="three-item miniature" href="<?php the_sub_field('ссылка_видео_youtube'); ?>" data-rel="lightbox-video">
                <span class="play-btn"></span>
                <?php 
                $image = get_sub_field('изображение');
                if( !empty($image) ): ?>
                    <img src="<?php echo $image['sizes']['medium_large']; ?>" alt="<?php echo $image['alt']; ?>" />
                <?php endif; ?>
            </a>
            <?php endwhile; ?>
        </div>
    </div>
</div>
<?php endif; ?>

LESS

.video{
    padding-top: 120px;
    padding-bottom: 90px;
    
    @media(max-width: 800px){
        padding-top: 80px;
        padding-bottom: 50px;
    }
    .miniature{
        display: block;
        text-decoration: none;
        height: 250px;
        position: relative;
        overflow: hidden;
        
        .play-btn{
            position: absolute;
            left: 50%;
            top: 50%;
            margin-left: -30px;
            margin-top: -30px;
            width: 60px;
            height: 60px;
            background: @color-1 url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23fff' stroke-width='2' stroke-linecap='square' stroke-linejoin='arcs'%3e%3cpolygon points='5 3 19 12 5 21 5 3'%3e%3c/polygon%3e%3c/svg%3e") no-repeat 57% 50%;
            border-radius: 50%;
            z-index: 2;
            transition: 0.3s all;
        }
        img{
            transition: 0.3s all;
        }
        &:hover{
            .play-btn{
                background-color: @text;
            }
            img{
                transform: scale(1.1);
            }
        }
    }
}