Add CSS support for radio select and checkbox form fields

@yas

Could you please review the patch?

@sekinet

Thank you for the patch. Can you please provide the patch based on scss, not directly modify main.css?

See also: README.md

@yas

Thank you for your information. I fixed it, could you please check again?

Thanks.

@sekinet

Thank you for the update. I'll merge the patch to 5.x and 6.x, and close this issue as Fixed.

Automatically closed - issue fixed for 2 weeks with no activity.