govuk-frontend/dist/govuk/components/file-upload/template-with-hint-text.html

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

<div class="govuk-form-group">
  <label class="govuk-label" for="file-upload-2">
    Upload your photo
  </label>
  <div id="file-upload-2-hint" class="govuk-hint">
    Your photo may be in your Pictures, Photos, Downloads or Desktop folder. Or in an app like iPhoto.
  </div>
  <input class="govuk-file-upload" id="file-upload-2" name="file-upload-2" type="file" aria-describedby="file-upload-2-hint">
</div>