Adding link styling to Custom CSS on a Form - reCATCHA Google links

When I enabled reCAPTCHA on one of my client's forms, the 2 links are styled like this if the form is on a Marketo Landing Page (blue - and underlined when hovered over):

This is the page: 
go.netsertive.com/2022-12-07WebinarUnderstandingConnectedTVAdvertisingforFranchiseBrands_RegLP.html

But for forms embedded on website pages, there is no styling on the links at all. They look like this:

The above is from this page:
https://www.netsertive.com/contact-us

Could I fix this by adding link styling to the custom CSS on the forms? If so, would someone be able to provide the code I would need to add? I don't know how to code CSS.