How to make accordion open at checkout opencart?

Question

opencart

Hello! Perhaps someone has come across editing the opencart checkout page. I need to reveal the entire accordion on the checkout page or remove it altogether. So that all fields are available without going to the next. step by clicking the "Continue" button. Is it possible to do this simply by removing/overlapping the styles?
Website link: https://bit.ly/3fLWhme

Answer 1

put simple checkout and don't worry

Answer 2

Forced to change the CSS class of the elements, which now you only change when you click on the "Continue" button.