Edit in JSFiddle

<section class="reviews">
  <div class="reviews__wrap container container--inner" style="background-image: url(img/reviews.jpg);">
    <div class="container"> 
       <h3 class="features__title">Отзывы <span>о нас?</span></h3>
       <div class="reviews__box owl-carousel owl-theme">
         <div class="reviews__item">
           <div class="reviews__image">
             <img src="img/legrand.png" alt="">
           </div>
           <div class="reviews__inner">
              <div class="reviews__text">
               <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Quidem quaerat officiis minus neque sunt, deleniti quos corporis officia. Sit autem aliquam, unde sint, voluptatum nisi. Possimus repellendus magnam non repellat.</p>
             </div>
             <a href="" class="reviews__button">Подробнее</a>
           </div>
         </div>
         <div class="reviews__item">
             <div class="reviews__image">
                <img src="img/gleeds.png" alt="">
             </div>
             <div class="reviews__inner">
                <div class="reviews__text">
                 <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Quidem quaerat officiis minus neque sunt, deleniti quos corporis officia. Sit autem aliquam, unde sint, voluptatum nisi. Possimus repellendus magnam non repellat.Possimus repellendus magnam non repellat.</p>
               </div>
               <a href="" class="reviews__button">Подробнее</a>
             </div>
          </div>
         <div class="reviews__item">
            <div class="reviews__image">
              <img src="img/ffu.png" alt="">
            </div>
             <div class="reviews__inner">
                <div class="reviews__text">
                 <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Quidem quaerat officiis minus neque sunt, deleniti quos corporis officia. Sit autem aliquam, unde sint, voluptatum nisi. Possimus repellendus magnam non repellat.</p>
               </div>
               <a href="" class="reviews__button">Подробнее</a>
           </div>
         </div>
       </div><!--end reviews__box-->
    </div>
  </div>
</section>

<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/OwlCarousel2/2.3.4/assets/owl.carousel.min.css">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/OwlCarousel2/2.3.4/assets/owl.theme.default.min.css">
<script src="https://cdnjs.cloudflare.com/ajax/libs/OwlCarousel2/2.3.4/owl.carousel.min.js"></script>
.reviews__wrap{
  		background-repeat: no-repeat;
		background-size: cover;
		background-position: top center;
		padding-bottom: 45px;
}

	.reviews__item{
	  background-color: #fff;
		padding: 20px;
		padding-top: 40px;
		display: flex;
		flex-direction: column;
		border-bottom: 20px solid #024a9c;
	}
  
  .reviews__inner {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
  }
		
	.reviews__image{
	  position: relative;
		margin-bottom: 25px;
	}
		
		.reviews__image::before{
		  	display: block;
			content: ' ';
			width: 100%;
			height: 0;
			padding-bottom: 15%;
		}
		
		img{
		  	display: block;
			width: 100%;
			height: 100%;
			position: absolute;
			top: 0px;
			left: 0px;
			right: 0px;
			object-fit: cover;
		}
		


	.reviews__box{
	  padding: 0px 110px;
    .owl-stage {
      display: flex;
    }
    .owl-item{
      display: flex;
    }
	}
		
	.reviews__button{
	  	margin-top: auto;
      align-self: flex-start;
	}
	
	.owl-carousel .owl-item img{
	  width: auto;
				margin: 0 auto;
	}
			
				
 var reviews__slider = $(".reviews .owl-carousel");
    reviews__slider.owlCarousel({
        dots: true,
        nav: false,
        loop: false,
        navText: '',
        items: 3,
        mouseDrag: false,
        touchDrag: false,
        margin: 30,
 
    });