diff2html/src/templates/line-by-line/file-diff.html

<div id="{{ printerUtils.getHtmlId(file) }}" class="d2h-file-wrapper" data-lang="{{ file.language }}">
  <div class="d2h-file-header">
    <span class="d2h-file-stats">
      <span class="d2h-lines-added">
        <span>+{{ file.addedLines }}</span>
      </span>
      <span class="d2h-lines-deleted">
        <span>-{{ file.deletedLines }}</span>
      </span>
    </span>
    <span class="d2h-file-name-wrapper">
        <span class="d2h-file-name">&nbsp;{{ printerUtils.getDiffName(file) }}</span>
    </span>
  </div>
  <div class="d2h-file-diff">
    <div class="d2h-code-wrapper">
      <table class="d2h-diff-table">
        <tbody class="d2h-diff-tbody">
          {{ diffs | safe}}
        </tbody>
      </table>
    </div>
  </div>
</div>