.ball{width:20px;height:20px;background-color:green;border-radius:50%;animation:bounce 1.5s infinite alternate}.ball,.logo{position:absolute;top:calc(50vh - 10px);left:calc(50vw - 10px)}.logo{z-index:9999;width:50px;height:50px;right:100%;animation:logo-fade-in 1s forwards,logo-scale 1s forwards,blink 3s infinite alternate}@keyframes bounce{0%{top:calc(40vh - 10px);left:calc(50vw - 10px)}20%{top:calc(40vh - 10px);left:calc(50vw - 10px)}40%{top:calc(40vh - 10px);left:calc(50vw - 10px)}60%{top:calc(60vh - 10px);left:calc(50vw - 10px)}80%{top:calc(40vh - 10px);left:calc(50vw - 10px)}to{top:calc(40vh - 10px);left:calc(50vw - 10px)}}@keyframes slide-in{0%{opacity:0}to{opacity:1}}@keyframes logo-fade-in{0%{opacity:0}to{opacity:1}}@keyframes logo-scale{0%{transform:scale(1)}50%{transform:scale(1.25)}to{transform:scale(1.5)}}@keyframes blink{0%,to{opacity:1}50%{opacity:0}}