GOV.UK Frontend 6.5.1
CSS: https://cdn.jsdelivr.net/npm/govuk-frontend@6.5.1/dist/govuk/govuk-frontend.min.css
JS: https://cdn.jsdelivr.net/npm/govuk-frontend@6.5.1/dist/govuk/govuk-frontend.min.js
Licence transcribed from: https://github.com/alphagov/govuk-frontend/blob/v6.5.1/LICENSE.txt
Downloaded CSS and JavaScript are unchanged. The HTML applies an alternative font via local CSS.
