.spinner {
    width: 40px;
    height: 40px;
    background-color: #fff;
  
    position: absolute;
    top: 48%;
    left: 48%;
    -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);
    }
  }

.spinner-wrapper {
position: fixed;
top: 0;
left: 0;
right: 0;
bottom: 0;
background-color: #333;
z-index: 999999;
}