<div class="page">
  <div class="swiper-container">
    <div class="swiper-wrapper">
      <div class="swiper-slide">Slide 1</div>
      <div class="swiper-slide">Slide 2</div>
      <div class="swiper-slide">Slide 3</div>
      <div class="swiper-slide">Slide 4</div>
      <div class="swiper-slide">Slide 5</div>
      <div class="swiper-slide">Slide 6</div>
      <div class="swiper-slide">Slide 7</div>
      <div class="swiper-slide">Slide 8</div>
      <div class="swiper-slide">Slide 9</div>
      <div class="swiper-slide">Slide 10</div>
      <div class="swiper-slide">Slide 11</div>
      <div class="swiper-slide">Slide 12</div>
      <div class="swiper-slide">Slide 13</div>
      <div class="swiper-slide">Slide 14</div>
      <div class="swiper-slide">Slide 15</div>
      <div class="swiper-slide">Slide 16</div>
      <div class="swiper-slide">Slide 17</div>
      <div class="swiper-slide">Slide 18</div>
      <div class="swiper-slide">Slide 19</div>
      <div class="swiper-slide">Slide 20</div>
    </div>
    <!-- Add Pagination -->
    <div class="swiper-pagination"></div>
    <div class="swiper-arrow-prev"><</div>
    <div class="swiper-arrow-next">></div>
  </div>
    <div class="swiper-container">
    <div class="swiper-wrapper">
      <div class="swiper-slide">Slide 1</div>
      <div class="swiper-slide">Slide 2</div>
      <div class="swiper-slide">Slide 3</div>
      <div class="swiper-slide">Slide 4</div>
      <div class="swiper-slide">Slide 5</div>
      <div class="swiper-slide">Slide 6</div>
      <div class="swiper-slide">Slide 7</div>
      <div class="swiper-slide">Slide 8</div>
      <div class="swiper-slide">Slide 9</div>
      <div class="swiper-slide">Slide 10</div>
      <div class="swiper-slide">Slide 11</div>
      <div class="swiper-slide">Slide 12</div>
      <div class="swiper-slide">Slide 13</div>
      <div class="swiper-slide">Slide 14</div>
      <div class="swiper-slide">Slide 15</div>
      <div class="swiper-slide">Slide 16</div>
      <div class="swiper-slide">Slide 17</div>
      <div class="swiper-slide">Slide 18</div>
      <div class="swiper-slide">Slide 19</div>
      <div class="swiper-slide">Slide 20</div>
    </div>
    <!-- Add Pagination -->
    <div class="swiper-pagination"></div>
    <div class="swiper-arrow-prev"><</div>
    <div class="swiper-arrow-next">></div>
  </div>
</div>

    html, body {
      position: relative;
      height: 100%;
    overflow: hidden;
    }
    body {
      background: #eee;
      font-family: Helvetica Neue, Helvetica, Arial, sans-serif;
      font-size: 14px;
      color:#000;
      margin: 0;
      padding: 0;

    }

.page {
  max-width: 100%;
  min-width: 0;
  display: grid;
  overflow: hidden;
  gap: 40px;
  height: 100vh;
}


    .swiper-container {
      width: 55%;
      margin-left: auto;
      margin-right: auto;
     position: relative;
      max-width: 100%;
  min-width: 0;
    }
    .swiper-slide {
      text-align: center;
      font-size: 18px;
      background: #fff;
      height: 100%;
/*    opacity: 0.3; */

      /* 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;
     transition: .3s all;
     transform: scale(0.8);
    }

.swiper-slide-prev,
.swiper-slide-next,
.swiper-slide-duplicate-prev,
.swiper-slide-duplicate-next {
  transform: scale(0.9)
}

.swiper-slide-active,
.swiper-slide-duplicate-active {
  transform: scale(1);
  opacity: 1;
}

/* .mask {
  width: 100%;
  height: 100%;
  -webkit-mask: linear-gradient(
    to right,
    rgba(0, 0, 0, 0) 0%,
    rgba(0, 0, 0, 1) 20%,
    rgba(0, 0, 0, 1) 80%,
    rgba(0, 0, 0, 0) 100%
  );
} */

.swiper-arrow-prev,
.swiper-arrow-next {
  position: absolute;
  top: 80%;
  transform: translateY(-50%);
  width: 30px;
  height: 30px;
  background-color: blue;
  color: #fff;
  z-index: 100;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  border-radius: 50%;
  cursor: pointer;
}

.swiper-arrow-prev {
    right: 66%;
}

.swiper-arrow-next {
    left: 66%;
}

document.querySelectorAll('.swiper-container').forEach(el => {
    var swiper = new Swiper(el, {
    slidesPerView: 3,
    loop: true,
    centeredSlides: true,
    spaceBetween: 30,
    pagination: {
      el: el.querySelector('.swiper-pagination'),
      clickable: true
    },
     navigation: {
        nextEl: el.querySelector('.swiper-arrow-next'),
        prevEl: el.querySelector('.swiper-arrow-prev')
     }
});
});