.scroll-top-button {
  position: fixed;
  right: calc(var(--gutter-width) * 2);
  bottom: calc(var(--gutter-width) * 2);

  background: transparent;
  color: var(--black);

  transition: opacity 0.4s;

  &.hide {
    opacity: 0;
    pointer-events: none;
  }
}