.moving-ball{border-radius:50%;position:absolute;z-index:-1;opacity:.5}@keyframes moveRight{0%{left:0}to{left:calc(100vw - 20px)}}.burst-effect{animation:burst .5s ease-in-out forwards}@keyframes burst{0%{transform:scale(1);opacity:1}to{transform:scale(3);opacity:0}}.burst-effect{animation:burst 1s ease-in-out forwards}