.flash {
  align-items: center;
  animation: appear-then-fade 4s 300ms both;
  background-color: var(--color-text);
  border-radius: var(--rounded-full);
  color: var(--color-text-reversed);
  display: flex;
  gap: var(--size-2);
  inset: 0;
  justify-content: center;
  line-height: var(--leading-none);
  margin-block-start: var(--flash-position, 0);
  margin-inline: auto;
  min-block-size: var(--size-11);
  padding: var(--size-1) var(--size-4);
  position: fixed;
  text-align: center;

  @media (width >= 40rem) {
    font-size: var(--text-lg);
  }

  @media (width >= 64rem) {
    font-size: var(--text-xl);
  }
}

@keyframes appear-then-fade {
  0%, 100% { opacity: 0; }
  5%, 60%  { opacity: 1; }
}