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

    body {
      background: #444;
      font-family: Helvetica Neue, Helvetica, Arial, sans-serif;
      font-size: 14px;
      color: #fff;
      margin: 0;
      padding: 0;
    }
    .container {
	display: flex;
    aspect-ratio: 4/3;
	flex-flow: column;
	justify-content: center;
	align-items: center;
	width: 100vw;
    }
    .topbar {
    width: 100%;
    height: 50px;
	justify-content: center;
      text-align: center;
    margin: auto;
}

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

    .swiper-slide {
      height: auto;
      text-align: center;
      font-size: 18px;
      background: #444;
      display: flex;
      justify-content: center;
      align-items: center;
    }

    .swiper-slide img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }