index.html

<div class="main-slider">
    <div class="wrapper main-slider__wrapper">
        <div class="slider__main swiper-container">
            <div class="swiper-wrapper">
                <div class="slider__main-item swiper-slide"><a href="#"><img src="img/slide.jpg"></a></div>
            </div>
        </div>
    </div>
</div>