CSS Spinner

HTML

<html>
<body>
    <div id="spinner"></div>
</body>
</html>

CSS

body {
    background-color: #bada55;
}

#spinner {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 16px;
    height: 16px;
    padding: 0;
    border: none;
    background-image: url(http://c279441.r41.cf0.rackcdn.com/spinner2.png);
      
    display: inline-block;
    
    animation-name: spin;
    animation-duration: 1.0s;
    animation-iteration-count: infinite;
    animation-timing-function: steps(8, start);    
    
    -webkit-animation-name: spin;
    -webkit-animation-duration: 1.0s;
    -webkit-animation-iteration-count: infinite;
    -webkit-animation-timing-function: steps(8, start);
    
    -moz-animation-name: spin;
    -moz-animation-duration: 1.0s;
    -moz-animation-iteration-count: infinite;
    -moz-animation-timing-function: steps(8, start);
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@-webkit-keyframes spin {
  from {
    -webkit-transform: rotate(0deg);
  }
  to {
    -webkit-transform: rotate(360deg);
  }
}

@-moz-keyframes spin {
  from {
    -moz-transform: rotate(0deg);
  }
  to {
    -moz-transform: rotate(360deg);
  }
}