<scripta src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.2/jquery.min.js"></script>
<style>
#overlay {
position: fixed;
top: 0;
left: 0;
width: 100%;
height: 100%;
background-color: rgba(0,0,0,0.5);
z-index: 999;
}
.loader {
border: 16px solid #f3f3f3;
border-radius: 50%;
border-top: 16px solid #3498db;
width: 120px;
height: 120px;
-webkit-animation: spin 2s linear infinite;
animation: spin 2s linear infinite;
position: absolute;
left: 50%;
top: 50%;
margin-left: -60px;
margin-top: -60px;
}
@-webkit-keyframes spin {
0% { -webkit-transform: rotate(0deg); }
100% { -webkit-transform: rotate(360deg); }
}
@keyframes spin {
0% { transform: rotate(0deg); }
100% { transform: rotate(360deg); }
}
</style>
<div id="overlay">
<div class="loader"></div>
</div>
<script>
$( document ).ready(function() {
$('#overlay').fadeOut();
});
</script>