/* Fullscreen overlay loader container */
#pageLoader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #111111d8;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 9999;
  }
  
  /* Book-style loader */
  .loader {
    width: 200px;
    height: 140px;
    background: #979794;
    box-sizing: border-box;
    position: relative;
    border-radius: 8px;
    perspective: 1000px;
  }
  
  .loader:before {
    content: '';
    position: absolute;
    left: 10px;
    right: 10px;
    top: 10px;
    bottom: 10px;
    border-radius: 8px;
    background: #f5f5f5 no-repeat;
    background-size: 60px 10px;
    background-image:
      linear-gradient(#ddd 100px, transparent 0),
      linear-gradient(#ddd 100px, transparent 0),
      linear-gradient(#ddd 100px, transparent 0),
      linear-gradient(#ddd 100px, transparent 0),
      linear-gradient(#ddd 100px, transparent 0),
      linear-gradient(#ddd 100px, transparent 0);
    background-position:
      15px 30px,
      15px 60px,
      15px 90px,
      105px 30px,
      105px 60px,
      105px 90px;
    box-shadow: 0 0 10px rgba(0,0,0,0.25);
  }
  
  .loader:after {
    content: '';
    position: absolute;
    width: calc(50% - 10px);
    right: 10px;
    top: 10px;
    bottom: 10px;
    border-radius: 8px;
    background: #fff no-repeat;
    background-size: 60px 10px;
    background-image:
      linear-gradient(#ddd 100px, transparent 0),
      linear-gradient(#ddd 100px, transparent 0),
      linear-gradient(#ddd 100px, transparent 0);
    background-position:
      50% 30px,
      50% 60px,
      50% 90px;
    transform: rotateY(0deg);
    transform-origin: left center;
    animation: paging 1s linear infinite;
  }
  
  @keyframes paging {
    to {
      transform: rotateY(-180deg);
    }
  }
  
  /* Loader text under book */
  #pageLoader .loader-text {
    color: #fff;
    font-family: 'Roboto', sans-serif;
    font-size: 16px;
    margin-top: 16px;
    letter-spacing: 1px;
    text-align: center;
  }