.spinner-wrapper {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: none transparent;
    z-index: 99998;
    }

.spinner {
    margin: 100px auto;
    width: 50px;
    height: 40px;
    text-align: center;
    font-size: 10px;
  }
  
  .spinner > div {
    background-color: #333;
    height: 100%;
    width: 6px;
    display: inline-block;
    
    -webkit-animation: sk-stretchdelay 1.2s infinite ease-in-out;
    animation: sk-stretchdelay 1.2s infinite ease-in-out;
  }
  
  .spinner .rect2 {
    -webkit-animation-delay: -1.1s;
    animation-delay: -1.1s;
  }
  
  .spinner .rect3 {
    -webkit-animation-delay: -1.0s;
    animation-delay: -1.0s;
  }
  
  .spinner .rect4 {
    -webkit-animation-delay: -0.9s;
    animation-delay: -0.9s;
  }
  
  .spinner .rect5 {
    -webkit-animation-delay: -0.8s;
    animation-delay: -0.8s;
  }
  
  @-webkit-keyframes sk-stretchdelay {
    0%, 40%, 100% { -webkit-transform: scaleY(0.4) }  
    20% { -webkit-transform: scaleY(1.0) }
  }
  
  @keyframes sk-stretchdelay {
    0%, 40%, 100% { 
      transform: scaleY(0.4);
      -webkit-transform: scaleY(0.4);
    }  20% { 
      transform: scaleY(1.0);
      -webkit-transform: scaleY(1.0);
    }
  }