body{
    margin: 0;
    padding: 0;
    background: #ffeb3b;
}
ul{
    position: absolute;
    top: 300px;
    left: 350px;
    transform: rotate(-50%,-50%);
    margin: 0;
    padding: 0;
    display: flex;
}
ul li{
    list-style: none;
    width: 150px;
    height: 150px;
    background: #cea321;
    margin: 0 5px;
    border-radius: 50%;
    animation: animate 1.4s linear infinite;
}
@keyframes animate{
    0%{
        transform: translateY(0);
    }
    60%{
        transform: translateY(0);
    }
    80%{
        transform: translateY(-150px);
    }
    100%{
        transform: translateY(0px);
    }
}
ul li:nth-last-child(1){
    animation-delay: 0;
}
ul li:nth-last-child(2){
    animation-delay: 0.2s;
}
ul li:nth-last-child(3){
    animation-delay: 0.4s;
}
ul li:nth-last-child(4){
    animation-delay: 0.6s;
}
ul li:nth-last-child(5){
    animation-delay: 0.8s;
}