.this {

  @keyframes bounce {
    0% {
      opacity: 1;
      transform: scale(1.2);
      -webkit-transform: scale(1.2);
    }
    10% {
      opacity: 1;
      transform: scale(1.0);
      -webkit-transform: scale(1.0);
    }
    80% {
      opacity: 1;
      transform: scale(1.0);
      -webkit-transform: scale(1.0);
    }
    100% {
      opacity: 0;
      transform: scale(0.5);
      -webkit-transform: scale(0.5);
    }
  }
  .promptBox {
    &.bounce {
      animation: bounce 2.5s ease-in-out forwards;
      -webkit-animation: bounce 2.5s ease-in-out forwards;
    }

    position: fixed;
    z-index: 99;
    width: 7.5rem;
    top: 30%;
    text-align: center;
    p {
      background: rgba(0, 0, 0, 0.9);;
      color: #fff;
      padding: 0.3rem .4rem;
      display: inline-block;
      margin: 0 auto;
      border-radius: 0.1rem;
      max-width: 4rem;
    }
  }
}