.spinner-overlay {
	position: absolute;
	top: 0;
	bottom: 0;
	left: 0;
	right: 0;
	background: rgba(0,0,0,0.8);
	text-align: center;
	color: white;
	z-index: 9999;
	-webkit-animation: loadingStart 3s 300ms linear 1 both;
	-moz-animation: loadingStart 3s 300ms linear 1 both;
	-o-animation: loadingStart 3s 300ms linear 1 both;
	animation: loadingStart 3s 300ms linear 1 both;
}

.spinner {
  width: 100px;
  height: 100px;
  background-color: #ffcc00;

  margin: 100px auto;
  -webkit-animation: sk-rotateplane 1.2s infinite ease-in-out;
  animation: sk-rotateplane 1.2s infinite ease-in-out;
}

@-webkit-keyframes sk-rotateplane {
  0% { -webkit-transform: perspective(120px) }
  50% { -webkit-transform: perspective(120px) rotateY(180deg) }
  100% { -webkit-transform: perspective(120px) rotateY(180deg)  rotateX(180deg) }
}

@keyframes sk-rotateplane {
  0% { 
    transform: perspective(120px) rotateX(0deg) rotateY(0deg);
    -webkit-transform: perspective(120px) rotateX(0deg) rotateY(0deg) 
  } 50% { 
    transform: perspective(120px) rotateX(-180.1deg) rotateY(0deg);
    -webkit-transform: perspective(120px) rotateX(-180.1deg) rotateY(0deg) 
  } 100% { 
    transform: perspective(120px) rotateX(-180deg) rotateY(-179.9deg);
    -webkit-transform: perspective(120px) rotateX(-180deg) rotateY(-179.9deg);
  }
}