message: feat(docs-infra): show dark scrollbars in dark mode
  With this commit, dark scrollbars will be shown when angular.io is in dark mode.
  PR Close
diff: .content {
  background: if($is-dark-theme, mat.get-color-from-palette($background, background), constants.$white);
  }
  +
  + @if $is-dark-theme {
  + :root {
  + color-scheme: dark;
  + }
  + }
  }
  