body {
    background: #c7a9f8;
  }
  
  .monster {
    width: 190px;
    height: 240px;
    margin: 2% auto;
    background: url('monster.png') left center;
    animation: play .8s steps(10) infinite;
  }
  
  @keyframes play {
    100% { background-position: -1900px; }
  }