Hiding Opencart/MijoShop Fields using CSS

Sometimes you want to hide checkout fields or shopping fields in OpenCart/Mijoshop without using an extension.  Here are some fields.  I will add as I use others in sites:

Card Issue Number

#payment .form-group:nth-of-type(6) {display:none;}

Extra Expiration Date

#payment .form-group:nth-of-type(3) {display:none;}