.body {
    background-color: rgb(0, 0, 142);
    background-repeat: none;
    background-size: cover;
    margin: 0;
    padding: 0;
}


  .rocket {
    position: absolute;
    bottom: -100px;
    left: 50%;
    transform: translateX(-50%);
    animation: launch 5s ease-in-out infinite;
  }

  .rocket img {
    width: 80px;
  }

  @keyframes launch {
    0% {
      bottom: -100px;
      opacity: 0;
    }
    10% {
      opacity: 1;
    }
    50% {
      bottom: 60%;
    }
    90% {
      opacity: 1;
    }
    100% {
      bottom: 110%;
      opacity: 0;
    }
  }