.flip-card {
    perspective: 1000px;
  }
  .flip-inner {
    position: relative;
    width: 100%;
    height: 320px;
    text-align: center;
    transition: transform 0.8s;
    transform-style: preserve-3d;
  }
  .flip-card:hover .flip-inner {
    transform: rotateY(180deg);
  }
  .flip-front, .flip-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: 10px;
  }
  .flip-back {
    transform: rotateY(180deg);
  }