#loading {
  width: 100%;
  height: 100vh;
}

#loading .loading-icon {
  position: absolute;
  width: 50px;
  height: 50px;
  top: 50%;
  left: 50%;
  transform: translate(-50%,-50%);
  -webkit-transform: translate(-50%,-50%);
  -moz-transform: translate(-50%,-50%);
  -ms-transform: translate(-50%,-50%);
  -o-transform: translate(-50%,-50%);
  -webkit-animation:changeright 1s linear infinite;
}

@-webkit-keyframes changeright{       
		 
  0%{-webkit-transform:rotate(0deg);}

  50%{-webkit-transform:rotate(180deg);}

  100%{-webkit-transform:rotate(360deg);}
}