<!--CSS Spinner-->
<div class="spinner-wrapper">
 <div class="spinner">
  <div class="sk-folding-cube">
   <div class="sk-cube1 sk-cube"></div>
   <div class="sk-cube2 sk-cube"></div>
   <div class="sk-cube4 sk-cube"></div>
   <div class="sk-cube3 sk-cube"></div>
  </div>
 </div>
</div>

.spinner-wrapper {
 position: fixed;
 top: 0;
 left: 0;
 right: 0;
 bottom: 0;
 background-color: red;
 z-index: 999999;
}

.sk-folding-cube {
 position: absolute;
 top: 48%;
 left: 48%;
 width: 40px;
 height: 40px;
 -webkit-transform: rotateZ(45deg);
 transform: rotateZ(45deg);
}

.sk-folding-cube .sk-cube {
 float: left;
 width: 50%;
 height: 50%;
 position: relative;
 -webkit-transform: scale(1.1);
 -ms-transform: scale(1.1);
 transform: scale(1.1);
}

.sk-folding-cube .sk-cube:before {
 content: '';
 position: absolute;
 top: 0;
 left: 0;
 width: 100%;
 height: 100%;
 background-color: orange;
 -webkit-animation: sk-foldCubeAngle 2.4s infinite linear both;
 animation: sk-foldCubeAngle 2.4s infinite linear both;
 -webkit-transform-origin: 100% 100%;
 -ms-transform-origin: 100% 100%;
 transform-origin: 100% 100%;
}

.sk-folding-cube .sk-cube2 {
 -webkit-transform: scale(1.1) rotateZ(90deg);
 transform: scale(1.1) rotateZ(90deg);
}

.sk-folding-cube .sk-cube3 {
 -webkit-transform: scale(1.1) rotateZ(180deg);
 transform: scale(1.1) rotateZ(180deg);
}

.sk-folding-cube .sk-cube4 {
 -webkit-transform: scale(1.1) rotateZ(270deg);
 transform: scale(1.1) rotateZ(270deg);
}

.sk-folding-cube .sk-cube2:before {
 -webkit-animation-delay: 0.3s;
 animation-delay: 0.3s;
}

.sk-folding-cube .sk-cube3:before {
 -webkit-animation-delay: 0.6s;
 animation-delay: 0.6s;
}

.sk-folding-cube .sk-cube4:before {
 -webkit-animation-delay: 0.9s;
 animation-delay: 0.9s;
}

@-webkit-keyframes sk-foldCubeAngle {
 0%,
 10% {
  -webkit-transform: perspective(140px) rotateX(-180deg);
  transform: perspective(140px) rotateX(-180deg);
  opacity: 0;
 }
 25%,
 75% {
  -webkit-transform: perspective(140px) rotateX(0deg);
  transform: perspective(140px) rotateX(0deg);
  opacity: 1;
 }
 90%,
 100% {
  -webkit-transform: perspective(140px) rotateY(180deg);
  transform: perspective(140px) rotateY(180deg);
  opacity: 0;
 }
}

@keyframes sk-foldCubeAngle {
 0%,
 10% {
  -webkit-transform: perspective(140px) rotateX(-180deg);
  transform: perspective(140px) rotateX(-180deg);
  opacity: 0;
 }
 25%,
 75% {
  -webkit-transform: perspective(140px) rotateX(0deg);
  transform: perspective(140px) rotateX(0deg);
  opacity: 1;
 }
 90%,
 100% {
  -webkit-transform: perspective(140px) rotateY(180deg);
  transform: perspective(140px) rotateY(180deg);
  opacity: 0;
 }
}