lbry-desktop/src/renderer/scss/component/_markdown-preview.scss

.editor-preview,
.markdown-preview {
  margin: 0;

  /* Headers */
  h1,
  h2,
  h3,
  h4,
  h5,
  h6 {
    font-family: 'metropolis-semibold';
    margin: 16px 0;
  }

  h1 {
    font-size: 1.22em;
  }

  h2 {
    font-size: 1.14em;
  }

  h3 {
    font-size: 1.06em;
  }

  h4 {
    font-size: 0.92em;
  }

  h5 {
    font-size: 0.84em;
  }

  h6 {
    font-size: 0.84em;
    color: var(--color-help);
  }

  /* Paragraphs */
  p {
    white-space: pre-line;
  }

  /* Strikethrough text */
  del {
    color: var(--color-help);
  }

  /* Tables */
  table {
    padding: 8px;
    margin: 16px 0;
    background-color: var(--card-bg);

    tr td,
    tr th,
    tr td:first-of-type,
    tr th:first-of-type,
    tr td:last-of-type,
    tr th:last-of-type {
      padding: 8px;
    }
  }

  /* Horizontal Rule */
  hr {
    border: 1px solid var(--color-divider);
  }

  /* Code */
  code {
    display: block;
    padding: 8px;
    margin: 16px 0;
    background-color: var(--color-bg-alt);
    color: var(--color-help);
    font-size: 1em;
    font-family: Consolas, 'Lucida Console', 'Source Sans', monospace;
  }
}

blockquote {
  padding: 8px;
  margin: 16px 0;
  color: var(--color-help);
  border-left: 2px solid var(--color-help);
  background-color: var(--color-bg-alt);
}