<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/js/bootstrap.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/2.2.4/jquery.min.js"></script>
<!DOCTYPE html>
<html>
<head>
<meta charset='UTF-8'>
<title>Image PreLoader</title>
<script type="text/javascript">
$(window).load(function() {
$(".se-pre-con").fadeOut("slow");
});
</script>
</head>
<body>
<div class="se-pre-con"></div>
<div class="content">
<img src="https://picsum.photos/3000/1200/?random" style=" width:100%; height: auto;">
</div>
</body>
</html>
