.swiper-container {
  width: 100%;
  height: 100%;
}
.swiper-slide {
  text-align: center;
  font-size: 18px;
  background: #fff;
  /* Center slide text vertically */
  display: -webkit-box;
  display: -ms-flexbox;
  display: -webkit-flex;
  display: flex;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  -webkit-justify-content: center;
  justify-content: center;
  -webkit-box-align: center;
  -ms-flex-align: center;
  -webkit-align-items: center;
  align-items: center;
}
.swiper-slide img {
  width: 100%;
}
    .gallery-product{/*height: 300px;*/}
    .gallery-product .swiper-container {
      width: 100%;
      /*height: 300px;*/
      margin-left: auto;
      margin-right: auto;
    }
    .gallery-product .swiper-slide {
      background-size: cover;
      background-position: center;
    }/*
    .gallery-product .gallery-top {
      height: 80%;
      width: 100%;
    }*/
    .gallery-product .gallery-thumbs {
      height: 20%;
      box-sizing: border-box;
      padding: 10px 0;
    }
    .gallery-product .gallery-thumbs .swiper-slide {
      width: 25%;
      height: 100%;
      opacity: 0.4;
    }
    .gallery-product .gallery-thumbs .swiper-slide-active {
      opacity: 1;
    }