*{
    margin: 0;
    padding: 0;
  }
  
  #jumping-arrow{
    width: 100vw;
    height: 180vh;
    display: flex;
    justify-content:center;
    align-items:center;
    /* background-color:#343434;  */
  }
  
  #jumping-arrow span{
    width: 10px;
    height: 40px;
    background:white;
    border-radius:5px;
    margin: 6px;
    animation: move 1.1s infinite ease-in-out;
  }
  
  span:nth-of-type(1){
    transform: rotate(-45deg);
  }
  
  span:nth-of-type(2){
    transform: rotate(45deg);
  }
  
  @keyframes move{
    0%{margin-top:0;}
    50%{margin-top:100px;}
    100%{margin-top:0;}
  }