go/ui/src/EditPage/Link/Copy.module.scss

.button {
  position: relative;

  > .icon {
    color: var(--text-super-muted);
    text-shadow: 1px 1px 0 #fff;
    cursor: pointer;

    &:hover {
      color: var(--text-muted-emphasis);
    }
  }

  > .feedback {
    position: absolute;
    color: var(--text-super-muted);
    opacity: 0;
    pointer-events: none;

    &.active {
      animation-name: go-wild;
      animation-duration: 300ms;
    }
  }
}

@keyframes go-wild {
  0% {
    transform: scale(0);
    opacity: 0;
  }
  50% {
    transform: scale(4);
    opacity: 0.7;
  }
  100% {
    transform: scale(2);
    opacity: 0;
  }
}