style.css

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

.books {
  padding: 1em 1em 1em 4em;
  margin-bottom: 10px;
  color: black;
  background: #FFA07A 5px center/3em no-repeat;
  position: relative;
}

.books:before {
  position: absolute;
  font-family: 'FontAwesome';
  font-size: 30px;
  top: 14px;
  left: 20px;
  content: "\f02d";
}

.befi {
    float: left;
}

.part b {
  color: #F4F4F5;
  opacity: 1;
  font-size: 18px;
}

/* footnote counter to restart numbering for each chapter and subchapter
  thanks @romles https://stackoverflow.com/questions/50616517/restart-endnote-numbering-after-each-gitbook-style-web-chapter-in-r-bookdown
  thanks @ilyankou for update from footnote-ref to footnoteRef for bookdown 0.9, and .level1 to .page-inner for 0.15 */

  /* don't show the wrong footnote calls */
  .footnote-ref sup,
  .footnoteRef sup {
    display: none;
  }

  /* use a counter for footnote calls */
  .page-inner {
    counter-reset: fn-call;
  }

  .footnote-ref,
  .footnoteRef {
    counter-increment: fn-call;
  }

  /* generate new footnote calls */
  .footnote-ref::after,
  .footnoteRef::after {
    content: counter(fn-call);
    position: relative;
    top: -.5em;
    font-size: 85%;
    line-height: 0;
    vertical-align: baseline;
  }

  /* use a counter for footnotes numbering */
  .footnotes ol {
    list-style: none;
    counter-reset: fn-number;
  }

  .footnotes li {
    counter-increment: fn-number;
  }

  .footnotes p::before {
    content: counter(fn-number) '. ';
  }