#introduction-container > h2,
.doc > h1,
.doc > h2,
.section > h1,
.section > h2 {
  margin-top: 4rem;
  margin-bottom: 1rem;
}

.doc > h3,
.section > h3 {
  margin-top: 3rem;
  margin-bottom: 1rem;
}

.doc > h4,
.section > h4 {
  margin-top: 2rem;
  margin-bottom: 1rem;
}

.doc > p,
.section > p {
  margin-top: 1rem;
  margin-bottom: 0.5rem;
}
.doc > *:first-child {
  margin-top: 0.1em;
}
.doc table {
  border: none;
  background: transparent;
  border-collapse: collapse;
  empty-cells: show;
  font-size: 0.9em;
  overflow-y: auto;
  display: block;
}
.doc table th,
.doc table td {
  border: 1px solid var(--border-color);
  background: transparent;
  padding: 0.1em 0.3em;
  height: 1.2em;
}
.doc table th {
  text-align: center;
  letter-spacing: 0.1em;
}
.doc pre {
  font-size: 1.1em;
  letter-spacing: 0.05em;
  background: var(--light-background-color);
  overflow-y: auto;
  padding: 0.3rem;
  border-radius: 3px;
}

.doc code,
.docutils.literal {
  font-size: 1.1em;
  letter-spacing: 0.05em;
  background: var(--light-background-color);
  padding: 1px;
  border-radius: 3px;
}
.doc ul li {
  list-style-position: inside;
  list-style-type: square;
}
.doc img {
  border: 1px solid #ccc;
}
.doc hr {
  background: #ccc;
  height: 1px;
  border: 0;
}
