Page Loader GIF - Background Image
<!DOCTYPE html>
<html>
<head>
<title></title>
<!-- Latest compiled and minified CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" integrity="sha384-1q8mTJOASx8j1Au+a5WDVnPi2lkFfwwEAa8hDDdjZlpLegxhjVME1fgjWPGmkzs7" crossorigin="anonymous">
<!-- Optional theme -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap-theme.min.css" integrity="sha384-fLW2N01lMqjakBkx3l/M9EahuwpSfeNvV63J5ezn3uZzapT0u7EYsXMjQV+0En5r" crossorigin="anonymous">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.2/jquery.min.js"></script>
<!-- Latest compiled and minified JavaScript -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js" integrity="sha384-0mSbJDEHialfmuBBQP6A4Qrprq5OVfW37PRR3j5ELqxss1yVqOtnepnHVP9aJ7xS" crossorigin="anonymous"></script>
<style type="text/css">
body.loading {
overflow: hidden;
}
body.loading .page_loader {
display: block;
}
.page_loader {
display: none;
position: fixed;
z-index: 1000;
top: 0;
left: 0;
height: 100%;
width: 100%;
background: rgba(0, 0, 0, 0.71)
url('https://prestigepay.com/wp-content/themes/pop/images/spinner.gif')
50% 50%
no-repeat;
}
}
</style>
</head>
<body>
<div class="container">
<div id="wrapper">
<h1>Spinner GIF demo</h1>
<form action="#" method="post" onsubmit="return validateForm();">
<input type="text" id="fname" name="fname" value="Dummy Input" /><br>
<input type="submit" name="submit" value="Submit" />
</form>
</div>
</div>
<div class="page_loader"></div>
<script>
function validateForm() {
var fname = $('#fname').val();
if (fname == null || fname == "") {
alert("We need your first name to verify your identity.");
return false;
}
else {
$body = $("body");
$body.addClass("loading");
return true;
}
}
</script>
</body>
</html>