.order-the-book-btn {
  margin: auto;
  display: block;
width: max-content;
  margin-top: 12px;
  padding: 12px 16px;
  background: #000;
  color: #fff;
  text-align: center;
  text-decoration: none;
  line-height: 1.2;
  box-sizing: border-box;
}

.order-the-book-btn:hover {
  opacity: 0.8;
}