.first-screen-spinner {
  width: 60px;
  height: 60px;
  position: relative;
  margin: 280px auto 0;
}
 
.first-screen-spinner .double-bounce1, .first-screen-spinner .double-bounce2 {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background-color: #409eff;
  opacity: 0.6;
  position: absolute;
  top: 0;
  left: 0;
   
  -webkit-animation: firstScreenBounce 2.0s infinite ease-in-out;
  animation: firstScreenBounce 2.0s infinite ease-in-out;
}
 
.first-screen-spinner .double-bounce2 {
  -webkit-animation-delay: -1.0s;
  animation-delay: -1.0s;
}
 
@-webkit-keyframes firstScreenBounce {
  0%, 100% { -webkit-transform: scale(0.0) }
  50% { -webkit-transform: scale(1.0) }
}
 
@keyframes firstScreenBounce {
  0%, 100% {
    transform: scale(0.0);
    -webkit-transform: scale(0.0);
  } 50% {
    transform: scale(1.0);
    -webkit-transform: scale(1.0);
  }
}