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

/* https://bookdown.org/yihui/rmarkdown-cookbook/multi-column.html  */
.cols {display: flex; }