body {
    opacity: 0;
    transition: opacity 0.4s ease-in-out;
  }

  .page-transition {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0);
    transition: background-color 0.4s ease;
    z-index: 9999;
    pointer-events: none;
  }

  .page-transition.active {
    background-color: rgba(255, 255, 255, 1);
    pointer-events: auto;
  }