govuk-frontend/dist/govuk/components/hint/template-with-html.html

GOV.UK Frontend contains the code you need to start building a user interface for government platforms and services.

<div class="govuk-hint">
  It's on your National Insurance card, benefit letter, payslip or <a class="govuk-link" href="#">P60</a>.
  For example, 'QQ 12 34 56 C'.
</div>