Advanced checkout form for age verification

Site URL: http://vtandf.de

Hi there, 

I was wondering whether, instead of installing a third party age pop-up, I could customise the date block in the custom checkout form as an age verification form with css. The cells would then highlight red if the age is not above 18.

Can this be done with code? I assume it would have to track the date to ensure it always being current. 

No you can’t add code to the checkout page.