How do I change the shopping cart checkout and buyer account registration templates? The templates created by the theme don’t inadequate for my site, and deleting unnecessary boxes is not allowed. My product is virtual and neither the buyer’s address nor the phone number is required. How do I fix the buttons, that is, write them in my correct language, and adjust the size, because they are either too small, too big, or only half of the button fits, and the other half is hidden somewhere?