<div id='preloader'>
  <div id='status'>
     <div class='spinner'>
      <div class='rect1'></div>
      <div class='rect2'></div>
      <div class='rect3'></div>
      <div class='rect4'></div>
      <div class='rect5'></div>
    </div>
  </div>
</div>

#preloader{overflow:hidden;background:#f5f6fa;left:0;right:0;top:0;bottom:0;position:fixed;z-index:9999}
#status{width:50px;height:30px;position:fixed;left:50%;top:50%;margin:-25px 0 0 -15px}
.spinner{margin:0 auto;width:50px;height:30px;text-align:center;font-size:10px}
.spinner > div{background-color:#4267b2;height:100%;width:6px;display:inline-block;-webkit-animation:stretchdelay 1.2s infinite ease-in-out;animation: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 stretchdelay{0%,40%,100%{-webkit-transform:scaleY(0.4)}20%{-webkit-transform:scaleY(1.0)}}
@keyframes stretchdelay{0%,40%,100%{transform:scaleY(0.4);-webkit-transform:scaleY(0.4)}20%{transform:scaleY(1.0);-webkit-transform:scaleY(1.0)}}