.loader{
    width: 110px;
    height: 110px;
    
    border: 9px solid #f3f3f3;
    border-top:9px solid #0287d8;
    border-radius: 100%;
    
    position: absolute;
    top:0;
    bottom:0;
    left:0;
    right: 0;
    margin: auto;
    
    animation:1s spin  infinite linear;
}

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

.preloader{
  height:100%;
  width:100%;
  background:rgba(0, 0, 0, 1);
  position:fixed;
  left:0;
  top:0;
  z-index:2;
  transition:1s all;
  opacity:1;
  visibility:visible;
 }
 .done{
	 opacity:0;
	 visibility:hidden;
 }