.sp-div {
	width:100%;
	height:100%;
	z-index:100000;
	background-color:rgba(0.5,0.5,0.5,0.3);
	position:fixed;
	top:0;
	left:0;
}

.loader {
  border: 5px solid #f3f3f3; /* Light grey */
  border-top: 5px solid #555555;
  border-radius: 50%;
  width: 50px;
  height: 50px;
  animation: spin 2s linear infinite !important;
  top: calc(50% - 25px);
  left: calc(50% - 25px);
  position: fixed;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}