.loader-calendar {
  border: 6px solid #F0ECE8;
  border-radius: 50%;
  border-top: 6px solid #333;
  width: 40px;
  height: 40px;
  -webkit-animation: spin 2s linear infinite;
  animation: spin 2s linear infinite;
}

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

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

.div-loader-centralizada{
	left: 50%;
	right: 50%;
	top: 20%;
	position: absolute;
	
}