#scroll-to-top {
  display: none;
  position: fixed;
  bottom: 16.5rem;
  right: 4rem;
  z-index: 1000;
}

#scroll-to-top a {
  display: flex;
  width: 3.5rem;
  height: 3.5rem;
  background: var(--colour-black);
  border: 1px solid var(--colour-white);
  border-radius: 50%;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transform: rotate(270deg);
}