body {
  background-color: #333;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
}

#book {
  width: 800px;
  height: 500px;
}

#book .page {
  background-color: white;
  box-shadow: 0 4px 10px rgba(0,0,0,0.5);
  overflow: hidden;
}

#book .page img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}