footer {display: flex; align-items: center; justify-content: center; width: 100%; height: 40px; padding: 12px 0; background: var(--rgba_4); z-index: 9;}
footer.main_f {position: fixed; bottom: 24px; left: 0; width: 100%; height: auto;;}
footer .copyright {font-size: 14px; font-weight: 400; line-height: 1.15; color: var(--gray_b);}