#shopCartModal { transition: opacity 0.25s ease-in-out; } #shopCartModal.hidden { display: none; } #shopCartModal:not(.hidden) { display: block; } #scCartToast { transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1), transform 0.3s cubic-bezier(0.16, 1, 0.3, 1); }