.article-top-navigation {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  align-items: center;
  margin: 1em 0;
  padding-bottom: 1em;
  border-bottom: 1px solid #ccc;
}

.article-top-navigation .back-link {
  justify-self: start;
}

.article-chapter {
  font-weight: bold;
  text-align: center;
  justify-self: center;
}

.article-date {
  color: rgb(0, 0, 0, 0.6);
  justify-self: end;
}

[type="math"] {
  margin: 2em 0;
}

[type="code"] {
  margin: 1em 0;
  border: 1px solid #ccc;
}

[type="code"] .code-language {
  padding: 0.6em 0.8em;
  font-size: 12px;
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid #ccc;
  background-color: #e8e8e8;
}

[type="code"] pre {
  background-color: #f8f8f8;
  overflow-x: auto;
  margin: 0;
  padding: 0.6em 0.8em;
}

[type="code"] pre code {
  display: block;
  width: 100%;
  box-sizing: border-box;
}

.article-bottom-navigation {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 1em 0;
  padding-top: 1em;
  border-top: 1px solid #ccc;
}

.article-bottom-divider {
  margin: 2em 0 1em 0;
  padding-top: 1em;
  border-top: 1px solid #ccc;
}

.article-top-navigation a, 
.article-bottom-navigation a {
  color: #2c5aa0;
  text-decoration: none;
}