change padding for the buttons inside the body in insight package to 0.5rem so it will work for long word.
change #payment-method ul margin to 1rem 0 which will give enough spacing for the bottom and top of this section.
add margin left for #payment-method li of 2rem to make the option indented in the page.
add #payment-method li:first-of-type to bring back the title of this section to the left by using margin-left 0 and give extra space to the option by using padding-bottom 0.5rem.