p.caption {
  color: #777;
  margin-top: 10px;
}
p code {
  white-space: inherit;
}
pre {
  word-break: normal;
  word-wrap: normal;
}
pre code {
  white-space: inherit;
}


.blackbox {
  padding: 1em;
  background: black;
  color: white;
  border: 2px solid orange;
  border-radius: 10px;
}
.center {
  text-align: center;
}
.left {
  text-align: left;
}

.infobox {
  padding: 1em 1em 1em 4em;
  margin-bottom: 10px;
  border: 2px solid orange;
  border-radius: 10px;
  background: #f5f5f5 5px center/3em no-repeat;
}

.caution {
  background-image: url("images/caution.png");
}

.exercise {
  background-image: url("images/exam.png");
}
.code {
  background-image: url("images/code.png");
}
.idea {
  background-image: url("images/idea.png");
}
.definition {
  background-image: url("images/definition.jpg");
}
.book .book-body .page-wrapper .page-inner {
  max-width: 90%;
}