.sk-double-bounce{width:40px;height:40px;position:relative;margin:40px auto}.sk-double-bounce .sk-child{width:100%;height:100%;border-radius:50%;background-color:#333;opacity:.6;position:absolute;top:0;left:0;animation:sk-doubleBounce 2s infinite ease-in-out}.sk-double-bounce .sk-double-bounce2{animation-delay:-1s}@keyframes sk-doubleBounce{0%,to{transform:scale(0)}50%{transform:scale(1)}}