.reveal img {
  max-height: 100vh;
}
.reveal {
  --r-block-margin: 0;
}

figure {
  display: flex;
  flex-flow: column;
  align-items: center;
}

figcaption {
  background-color: #222;
  color: #fff;
  font: italic smaller sans-serif;
  padding: 3px;
  text-align: center;
  max-width: 100%;
  font-size: 16px;
  transform: translateY(-100%);
  opacity: 0;
  visibility: hidden;
}
figure img:hover + figcaption,
figure img + figcaption:hover {
  visibility: visible;
  opacity: 1;
  transform: translateY(-100%);
}

.input-icon-codepen {
  width: 160px;
  margin-top: 2rem;
  border: 1px solid #fff;
  padding: 0.7rem 1rem;
}

td {
  font-size: 20px;
}
.white-space-nowrap {
  white-space: nowrap;
}
.tree-nav {
  text-align: left;
}
summary {
  cursor: pointer;
  margin-left: 2rem;
}
details {
  margin-left: 2rem;
  font-size: 1.5rem;
  line-height: 3.2rem;
}
details > div {
  margin-left: 4rem;
}
.code-filename {
  background-color: rgba(0,0,0,.4);
  text-align: right;
  padding: 2px;
  font-size: 1.1rem;
}