body {
  font-family: Arial, sans-serif;
  background-color: #f5f5f5;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.book-container {

  background: white;
  border: 2px solid #ccc;
  border-radius: 10px;
  width: 410px;
  height: 600px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.page {
	  margin-top: -200px;	
  flex: 1;
  overflow: auto;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 1.5em;
  text-align: center;
}

.controls {
  text-align: center;
  margin-top: -200px;
}

button {
  margin: 0 2px;
  padding: 10px 20px;
  font-size: 1em;
  border: none;
  border-radius: 5px;
  background-color: #4CAF50;
  color: white;
  cursor: pointer;
}

button:disabled {
  background-color: #aaa;
}



.share-buttons button {
  margin: 5px;
  padding: 8px 15px;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

#shareImageFacebook {
  background-color: #4267B2;
}

#shareImageWhatsApp {
  background-color: #25D366;
}