#loading {
  position        : fixed;
  height          : calc(100% - 3em);
  width           : 100%;
  top             : 3em;
  background-color: rgba(0,0,0,0.6);
  z-index         : 99999999;
  display         : none;
}

.double-bounce {
  width    : 5em;
  height   : 5em;
  margin   : 0 auto;
  position : relative;
  top      : 50%;
  transform: translateY(-50%);
}

.double-bounce .child {
  width            : 100%;
  height           : 100%;
  border-radius    : 50%;
  background-color : #fff;
  opacity          : .6;
  position         : absolute;
  top              : 0;
  left             : 0;
  -webkit-animation: doubleBounce 2s infinite ease-in-out;
  animation        : doubleBounce 2s infinite ease-in-out;
}

.double-bounce .double-bounce2 {
  -webkit-animation-delay: -1.0s;
  animation-delay        : -1.0s;
}

@-webkit-keyframes doubleBounce {
  0%,
  100% {
    -webkit-transform: scale(0);
    transform        : scale(0);
  }

  50% {
    -webkit-transform: scale(1);
    transform        : scale(1);
  }
}

@keyframes doubleBounce {
  0%,
  100% {
    -webkit-transform: scale(0);
    transform        : scale(0);
  }

  50% {
    -webkit-transform: scale(1);
    transform        : scale(1);
  }
}