body {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
  background-color: #f4f4f4;
  font-family: Arial, sans-serif;
}

.book-container {
  width: 80vw;
  height: 60vh;
  perspective: 2000px;
}

.book {
  width: 100%;
  height: 100%;
  position: relative;
}

.page {
  position: absolute;
  width: 50%;
  height: 100%;
  background-color: #ffffff;
  box-shadow: 0 0 15px rgba(0, 0, 0, 0.2);
  transition: transform 0.6s ease-in-out;
  transform-origin: left;
  backface-visibility: hidden;
}

.front-cover {
  z-index: 5;
}

.page1, .page2, .page3, .back-cover {
  transform: rotateY(-180deg);
  left: 50%;
}

.book:hover .front-cover {
  transform: rotateY(-180deg);
}

.book:hover .page1 {
  transform: rotateY(0deg);
}

.book:hover .page2 {
  transform: rotateY(0deg);
}

.book:hover .page3 {
  transform: rotateY(0deg);
}

.book:hover .back-cover {
  transform: rotateY(0deg);
}

.page h2, .page p, .page ul, .page a {
  padding: 20px;
  margin: 0;
  font-size: 18px;
  line-height: 1.5;
  color: #333;
}

.page ul {
  list-style: none;
  padding: 0;
}

.page a {
  color: #007bff;
  text-decoration: none;
  display: block;
  margin-top: 10px;
}

.page a:hover {
  text-decoration: underline;
}