<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<link rel="stylesheet" href="https://fonts.googleapis.com/icon?family=Material+Icons">
<div class="bar">
<i class="material-icons">home</i>
<i class="material-icons">search</i>
<i class="material-icons">add_box</i>
<i class="material-icons is-active">favorite
<div class="notif">
<i class="material-icons">favorite</i>
<i class="material-icons">mode_comment</i>
<i class="material-icons">person</i>
</div>
</i>
<i class="material-icons">person</i>
</div>
<script type="text/javascript">
$('.bar i').click(function() {
$(this).addClass('is-active').siblings().removeClass('is-active');
});
</script>
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