#toTopButton {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  opacity: 0;
  pointer-events: none;
  transform: scale(0.8);
  transition: opacity 300ms, transform 300ms;

  min-width: 4rem;
  min-height: 4rem;
}

@media (max-width: 560px) {
  #toTopButton {
    right: .5rem;
    bottom: .5rem;
  }
}