@keyframes show-copyright-tooltip {
  0% {
    opacity: 0;
  }

  100% {
    opacity: 1;
  }
}

.copyright {
  display: inline-block;
}

.copyright__button {
  align-items: center;
  background-color: var(--color-midnight);
  block-size: 2.7rem;
  color: var(--color-white);
  cursor: pointer;
  display: inline-flex;
  font-size: 1.5rem;
  inline-size: 2.7rem;
  justify-content: center;
  line-height: 0;
  transition-duration: var(--duration-fast);
  transition-property: background-color, color;
  user-select: none;
}

.copyright__tooltip {
  animation: show-copyright-tooltip var(--duration-default);
  background-color: var(--color-midnight);
  color: var(--color-white);
  font-size: 1.4rem;
  inline-size: 25rem;
  line-height: var(--line-height-small);
  padding: 1rem 1.5rem;
  position: absolute;
  text-align: start;
}