.markdown-section > .page-title {
  margin: 0 0 28px;
  padding: 0 0 14px;
  border-bottom: 1px solid #e5e7eb;
  color: #20242a;
  font-size: 32px;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

@media screen and (max-width: 640px) {
  .markdown-section > .page-title {
    margin-bottom: 22px;
    font-size: 28px;
  }
}