.loader{display:block;width:50px;height:50px;position:relative;margin:0 auto}.loader:before,.loader:after{content:"";position:absolute;left:50%;bottom:0;width:40px;height:40px;border-radius:50%;background:#fff;transform:translate(-50%,-100%) scale(0);animation:push_401 2s infinite linear}.loader:after{animation-delay:1s}@keyframes push_401{0%,50%{transform:translate(-50%) scale(1)}to{transform:translate(-50%,-100%) scale(0)}}