.book {
  width: 100%;
  background-color: #222;
  clear: both;
  padding: 0 3em;
}

.page {
  float: left;
  clear: none;
  margin: 1em 1em 1em 1em;
  background-color: #eeeef3;
  border: 1px solid #2a2a25;
  width: 360px;
  height: 30em;
  padding: 1em;
}