.book3d {
    width: 100%;
    padding: 20px 0;
    text-align: center;
    position: relative; }
  
  .book3d > .book3d-pages {
    height: 500px;
    width: 700px;
    position: relative;
    border-radius: 0;
    margin: 0 auto;
    margin-bottom: 30px;
    -webkit-perspective: 1200px;
            perspective: 1200px; }
  
  @media (max-width: 1270px) {
    .book3d > .book3d-pages {
      height: 400px;
      width: 560px; } }
  @media (max-width: 580px) {
    .book3d > .book3d-pages {
      height: 220px;
      width: 300px; } }
  .book3d-pages > .book3d-item {
    position: absolute;
    height: 100%;
    width: 50%;
    -webkit-transition: 0.7s ease-in-out;
    transition: 0.7s ease-in-out;
    -webkit-transform-style: preserve-3d;
            transform-style: preserve-3d; }
  
  .book3d > .book3d-pages > .book3d-item {
    right: 0;
    -webkit-transform-origin: left;
            transform-origin: left;
    border-radius: 0; }
  
  .book3d-item > figure.book3d-item__front, .book3d-item > figure.book3d-item__back {
    margin: 0;
    height: 100%;
    width: 100%;
    position: absolute;
    left: 0;
    top: 0;
    background-size: cover;
    background-repeat: no-repeat;
    background-color: white;
    overflow: hidden; 

    -webkit-perspective: 0;
    -webkit-backface-visibility: hidden;
    -webkit-transform: translate3d(0,0,0);
    visibility:visible;
    backface-visibility: hidden;
    }
  
  .book3d-item > figure.book3d-item__front {
    background-position: right;
    border-radius: 0;
    -webkit-box-shadow: 2px 2px 15px -2px rgba(0, 0, 0, 0.1);
            box-shadow: 2px 2px 15px -2px rgba(0, 0, 0, 0.1); }
  
  .book3d-item > figure.book3d-item__back {
    background-position: left;
    border-radius: 0;
    -webkit-box-shadow: -2px 2px 15px -2px rgba(0, 0, 0, 0.1);
            box-shadow: -2px 2px 15px -2px rgba(0, 0, 0, 0.1);
    -webkit-transform: rotateY(180deg);
            transform: rotateY(180deg); }
  
  .flip {
    -webkit-transform: rotateY(-180deg);
            transform: rotateY(-180deg); }
  
  .book3d .book3d-navs > button {
    background-color: #00000000;
    color: #CCC;
    cursor: pointer;
    -webkit-transition: 0.3s ease-in-out;
    transition: 0.3s ease-in-out;
    position: absolute;
    top: 42%;
    z-index: 2;
    font-size: 50px;
    border: unset;
    padding: 0; }
    .book3d .book3d-navs > button svg {
      width: 21px;
    }
  
  @media (max-width: 580px) {
    .book3d .book3d-navs > button {
      top: 32%; } }
  .book3d .book3d-navs > button:focus, .book3d .book3d-navs > button:active {
    outline: none; }
  
  .book3d-navs__prev {
    left: 0; }
  
  .book3d-navs__next {
    right: 0; }
  
  .book3d > p {
    color: rgba(0, 0, 0, 0.7);
    font-size: 24px; }
  
  .book3d > p > a {
    text-decoration: none;
    color: #ef9f00; }
  
  .book3d .book3d-navs > button:hover {
    color: #145e5d; }