* {
  --second-line-indent: 2em;
  --list-indent: 40px;
}

pre { white-space: pre-wrap }

.breadcrumb ul {
  list-style: none;
  padding: 0;
  margin: 0;
  margin-left: var(--second-line-indent);
  text-indent: calc(-1*var(--second-line-indent));
}
.breadcrumb li:not(:first-of-type)::before {
  content: " → ";
  margin: 0 0.2em;
}
.breadcrumb li { display: inline }

.page-tree {
  list-style: none;
  padding-left: var(--list-indent);
}
.page-tree .page-tree { border-left: solid grey 1px }

.page-list {
  list-style: none;
  padding-left: calc(var(--list-indent) + var(--second-line-indent));
  text-indent: calc(-1*var(--second-line-indent));
}

.page-comma-list {
  display: inline-block;
  padding-left: var(--list-indent);
}