Pop up box which will display after a time limit.

time-delay-pop-up-box

<div id="popupbox">
<a id="closebox" onclick="document.getElementById('popupoffer').style.display = 'none';">&times;</a>
</div>

<script type="text/javascript">
function show() {
    document.getElementById("popupbox").style.display = "block";
}

$(function() {
    setTimeout(show, 300);
});
</script>

<style>
#popupbox { background: rgba(255, 255, 255, .95); width:350px; text-align: center; height: auto; margin: 0 auto; z-index: 999999;  display: none; color: #000; position: fixed; top: 50px; margin-left: auto; margin-right: auto; left: 0; right: 0; padding: 10px;
 }
#popupbox #closebox { color: #777; font-size: 2.2em; text-decoration: none; display: block; float: right; }
</style>