<div class="modal-gallery" data-widget="news">
  <div class="modal-gallery__content">
    <div class="container">
      <div class="btn-close modal-gallery__close">
        <img src="../../../assets/resource/close.svg" alt="">
      </div>
      <div class="modal-gallery__swiper">

        <div class="swiper slider-gallery">
          <!-- Additional required wrapper -->
          <div class="swiper-wrapper slider-gallery__wrapper"></div>

          <div class="btn-arrow slider-gallery__btn-arrow">
            <div class="btn-arrow__item btn-arrow__item_prev slider-gallery__item-prev">
              <img src="../../../assets/resource/arrow-prev.svg" alt="">
            </div>
            <div class="btn-arrow__item btn-arrow__item_next slider-gallery__item-next">
              <img src="../../../assets/resource/arrow-next.svg" alt="">
            </div>
          </div>
        </div>
      </div>
    </div>
  </div>
</div>