sure

It depends what you are doing. Without knowing context. You can add the css class for entry when you add the element and when you are to remove it add the exit and delay the removal of the element with a js timeout.

We use such animations, it does make electric app feel a bit more like a regular SPA:

&.active {
    background: var(--purple100);
    color: var(--purple);
    animation: loading 2s infinite;
  }