.fav-tooltip {
    position: absolute;
    top: -30px;
    right: 0;
    background: #222;
    color: #fff;
    padding: 3px 8px;
    font-size: 12px;
    border-radius: 5px;
    white-space: nowrap;
    z-index: 10;
    opacity: 0;
    transition: opacity 0.15s ease-in-out;
    pointer-events: none;
  }

  .star-fav:hover .fav-tooltip {
    opacity: 1;
  }