.lds-facebook {
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    cursor: default;
    display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
    -webkit-box-pack: center;
  -ms-flex-pack: center;
  justify-content: center;
  position: fixed;
  width: 100%;
  height: 100%;
  
}

.lds-facebook div {
  display: inline-block;
  position: absolute;
  left: 8px;
  width: 16px;
  background: #dfc;
  animation: lds-facebook 1.2s cubic-bezier(0, 0.5, 0.5, 1) infinite;
  z-index:100000000;
}

.lds-facebook div:nth-child(1) {
  left: 8px;
  animation-delay: -0.15s;
}

.lds-facebook div:nth-child(2) {
  left: 32px;
  animation-delay: -0.7s;
}

.lds-facebook div:nth-child(3) {
  left: 56px;
  animation-delay: -0.2s;
}


@keyframes lds-facebook {
  0% {
    top: 8px;
    height: 64px;
    background-color:green;
  }
  
  50%, 100% {
    top: 24px;
    height: 32px;
    background:green;
  }
}