<!DOCTYPE html>
<html lang="ru">
<head>
<style>
.window_show {
display: none;
z-index: 1000;
position: fixed;
width: 200px; height: auto;
right: 20px;
bottom: 20px;
padding: 15px;
text-align: center;
border-radius: 10px;
}
.green {
color: #fff;
background: #36549a;
border: 3px solid #7f98c0;
}
.green a {
color: #fff;
}
</style>
<script src="https://code.jquery.com/jquery-3.3.1.min.js"></script>
<script type="text/javascript">
$(document).ready(function() {
var rnd = function (min, max){
return Math.floor(Math.random() * (max*1000 - min*1000)) + min*1000;
};
function sh(){
$('.window_show').toggle('drop');
}
if(!localStorage.getItem('flag5')){
setTimeout(sh, 5000);
if(!localStorage.getItem('flag5')) var nn = setTimeout(function ff(){
sh();
if(!localStorage.getItem('flag5')) nn = setTimeout(ff, rnd(1, 10)); // диапазон 1-10 сек
},10000);
}
$('#off').click(function(){
localStorage.setItem('flag5', 1);
});
});
</script>
</head>
<body>
<div class='window_show green'>Заказ удален<button id="off">Отключить уведомление</button></div>
</body>
</html>