body {
    margin: 30px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    height: 100vh;
    background-color: black;
    overflow: hidden;
  }

  .sub-title {
    font-size: 60px;
    text-align: center;
    padding-bottom: 90px;
    color: #0ef;
  }
  
  .image-container {
    position: relative;
    width: 200px;
    height: 200px;
    transform-style: preserve-3d;
    transform: perspective(1000px) rotateY(0deg);
    transition: transform 0.7s;
    
  }
  
  .image-container span {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    transform: rotateY(calc(var(--i) * 45deg)) translateZ(400px);
  }

  .row {
    position: relative;
    border-radius: 8px;
    cursor: pointer;
}
  
  .image-container span img {
    left: 0;
    top: 0;
    width: 100%;
    box-shadow: 1px 1px 20px #012290f7, 1px 1px 40px #0053b8f7;
    border: 1px solid black;
    border-radius: 10px;
    transition: background 0.5s, transform 0.5s;

    display: block;
    transition: transform 0.5s;
  }

  .layer {
    height: 0;
    background:linear-gradient(rgba(0,0,0,0.1),#0ef) ;
    position: absolute;
    border-radius: 8px;
    bottom: 0;
    left: 0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 0 20px;
    transition: height 0.5s;
}

.layer h5 {
    color: #000;
    font-size: 10px;
    font-weight: 500;
    margin-bottom: 5px;
}

.layer p {
    color: #000;
    font-size: .5rem;
    line-height: 1.4;
}

.layer i {
    color: #ff004f;
    font-size: 10px;
    background: #fff;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.row:hover img {
    transform: scale(1.1);
}

.row:hover .layer {
    height: 100%;
    transform: scale(1.1);
}

  .image-container span img:hover{
    box-shadow: 0 0 5px cyan, 0 0 25px cyan, 0 0 50px cyan, 0 0 100px cyan ;
    transform: translateY(-10px);
  }
  
  .btn-container {
    position: relative;
    width: 80%;
  }
  
  .btn {
    position: absolute;
    bottom: -80px;
    border: none;
    cursor: pointer;
    padding: 12px 28px;
    background: #0ef;
    border-radius: 40px;
    font-size: 16px;
    color: #081b29;
    letter-spacing: 1px;
    text-decoration: none;
    font-weight: 600;
    box-shadow: 0 0 5px #0ef, 0 0 25px #0ef;
    z-index: 10;
  }
  
  .btn:hover {
    filter: brightness(1.5);
    box-shadow: 0 0 5px cyan, 0 0 25px cyan, 0 0 50px cyan, 0 0 100px cyan,
    0 0 200px cyan;
  }
  
  #prev {
    left: 20%;
  }
  
  #next {
    right: 20%;
  }