/* === Book Page Layout === */
.book-content.centered {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}

.book-cover {
  width: 150px;
  height: auto;
  display: block;
  margin: 0 auto 1em;
}

.book-title {
  margin-bottom: 1em;
}

.book-subtitle {
  font-size: 1.25rem;
  font-style: italic;
  color: #555;
  margin-top: -0.5rem;
  margin-bottom: 1.5rem;
}