html,
    body {
      position: relative;
      height: 100%;
    }

    section.vh100 {
      width: 100%;
      height: 100vh;
      background: #ccc;
    }

    .swiper {
      width: 100%;
      height: 100%;
    }

    .swiper-slide {
      text-align: center;
      font-size: 18px;
      display: flex;
      justify-content: center;
      align-items: center;
    }