.spinner {
    margin: 10px auto;
    width: 50px;
    height: 40px;
    text-align: center;
    font-size: 10px;
    position: relative;
  }
  
  .spinner > div {    
    background-color: #409D6D;
    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 {
    background-color: #28928E;
    -webkit-animation-delay: -1.1s;
    animation-delay: -1.1s;
  }
  
  .spinner .rect3 {
    background-color: #28928E;
    -webkit-animation-delay: -1.0s;
    animation-delay: -1.0s;
  }
  
  .spinner .rect4 {
    background-color: #0B85B6;
    -webkit-animation-delay: -0.9s;
    animation-delay: -0.9s;
  }
  
  .spinner .rect5 {
    background-color: #0281C4;
    -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);}
  }