.wrap{width:80px;height:100px;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.ball{background-color:#6524eb;border:1px solid #6524eb;border-radius:50%;width:10px;height:10px;animation:2.5s infinite bounce;display:block;position:absolute;bottom:10px}.ball:nth-child(2){animation-delay:.5s;left:30%}.ball:nth-child(3){animation-delay:1s;left:60%}.ball:nth-child(4){animation-delay:1.5s;left:89%}@keyframes bounce{0%{margin-bottom:0}50%{margin-bottom:25px}to{margin-bottom:0}}