<style>
#page-loader {
        position: fixed!important;
        top: 0;
        right: 0;
        bottom: 0;
        left: 0;
        z-index: 9999;
        background:#fff url('https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh1inaLbdT7yhThIT1fqxasZCL-mMJCz-g4HoMlq91zOa1-eNbRfgrmWyr8yJsIVJfFa9GOMM80pNF1OEAEDV-eO8Zj0o2WkexZVrep79MMJ_So_40LDwDiFhLwSX-yZs54jk_YZd2SxRM/s1600/iOS7Loader.gif') no-repeat 50% 30%;
        color: #000;
        display: none;
        font: 0/0 a;
        text-shadow: none;
        padding: 1em 1.2em;
}
</style>
<script type='text/javascript'>
//<![CDATA[
$(document.body).append('<div id="page-loader">Loading...</div>');
$(window).on("beforeunload", function() {
    // ... Show the Animation `.fadeIn()`
    $('#page-loader').fadeIn(000).delay(6000).fadeOut(000);
});
//]]>
</script>