.swiperBooks {
  overflow: hidden;
  margin-left:60px;
  margin-right:60px;
}

.swiperBooks .swiper-slide img {
  width: 100%;
  height: auto;
  display: block;
}

.swiper-button-prev,
.swiper-button-next {
  position: absolute !important;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;   /* make sure they are on top */
}
.slider-container{
    position: relative;
}