body {
  margin: 0;
  font-family: serif;
  background-color: #fffaf0;
}

.book-page {
  height: 100vh;
  padding: 60px;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: #fffdf5;
  border-left: 2px solid #d4bfa2;
  border-right: 2px solid #d4bfa2;
  box-shadow: inset 0 0 15px rgba(0, 0, 0, 0.1);
}

.nav-button {
  margin-top: 40px;
  display: inline-block;
  padding: 10px 20px;
  text-decoration: none;
  color: #6b4e2f;
  background-color: #fcefd6;
  border: 1px solid #d4bfa2;
  border-radius: 5px;
  transition: all 0.3s;
}

.nav-button:hover {
  background-color: #f3e1b8;
}