Checkout font to big

-- url of the page with the problem -- : acceptatie.theoriecursus-in-1-dag-arnhem...inschrijven/checkout
-- HikaShop version -- : 3.1.1
-- Joomla version -- : 3.7.2
-- PHP version -- : 7

Hi Hikashop team,

I'm busy upgrading a site to 3.x but when I go to the checkout pages the font is too big.

See image, how can I fix this? I don't want to downsize my H1 because I need that on other pages in the site.

I saw that in the previous version 2 that there was a special class checkout h1.
Is this something what I can copy and paste into the frontend style or is there a better way to fix this issue.



Hope to hear from you.

Kind regards,
Lumiga