.loader{width:8px;height:8px;border-radius:50%;display:block;margin:0 20px;position:relative;background:#fff;box-shadow:-12px 0 #fff,12px 0 #fff;box-sizing:border-box;animation:shadowPulse 2s linear infinite}@keyframes shadowPulse{33%{background:#fff;box-shadow:-12px 0 #000,12px 0 #fff}66%{background:#000;box-shadow:-12px 0 #fff,12px 0 #fff}to{background:#fff;box-shadow:-12px 0 #fff,12px 0 #000}}