Bootstrap Cookie Alert pages

<!DOCTYPE html>
<html>
<head>
    <title>Afficher la barre d'alerte de notification de cookie Bootstrap lors du chargement de la page - Plugin d'alerte de cookie JQuery | Par MEZGANI SAID</title>
	<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
	<meta http-equiv="X-UA-Compatible" content="IE=edge">
	<meta name="viewport" content="width=device-width, initial-scale=1">
	<meta name="keyword" content="Afficher la barre d'alerte de notification de cookie Bootstrap lors du chargement de la page - Plugin d'alerte de cookie JQuery">
	<meta name="author" content="Mezgani said">
	<meta name="copyright" content="NGLESSON">
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.0.0/css/bootstrap.min.css">
    <link href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet" type="text/css">
    <link href="style.css" rel="stylesheet" type="text/css">	
</head>
<body>
    <div class="container">
        <div class="card" style="margin-top: 70px">
            <div class="card-body">
                <div id="fillme"></div>
            </div>
        </div>
    </div>
    <!-- COOKIES -->
    <div class="alert alert-dismissible text-center cookiealert" role="alert">
        <div class="cookiealert-container">
            <b>En poursuivant votre navigation sur nos sites, vous acceptez l'installation et l'utilisation de cookies sur votre poste, 
                dans le respect de notre politique de protection de votre vie privée. <a href="http://bglesson.com/" target="_blank">Plus de details</a></b>
            <button type="button" class="btn btn-primary btn-sm acceptcookies" aria-label="Close">
                J'accepte
            </button>
        </div>
    </div>
    <!-- /COOKIES -->
<!-- JAVASCRIPT -->
<script>
    for (var i = 1; i <= 150; i++)
        document.querySelector("#fillme").innerHTML += "Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor " 
        +"ut labore et dolore magna aliqua. ";
</script>
<!-- jQuery 3.2.1 + JS-Cookie 2.1.4 - Only needed if you are using the script version with dependencies -->
<!--<script src="https://cdn.jsdelivr.net/g/jquery@3.2.1,js-cookie@2.2.0"></script>-->
<script type="text/javascript" src="script.js"></script>
</body>
</html>
.cookiealert {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    margin: 0 !important;
    z-index: 999;
    opacity: 0;
    border-radius: 0;
    background: #212327 url("cubes.png");
    transform: translateY(100%);
    transition: all 500ms ease-out;
    color: #ecf0f1;
}

.cookiealert.show {
    opacity: 1;
    transform: translateY(0%);
    transition-delay: 1000ms;
}

.cookiealert a {
    text-decoration: underline
}

.cookiealert .acceptcookies {
    margin-left: 10px;
    vertical-align: baseline;
}
(function () {
    "use strict";

    var cookieAlert = document.querySelector(".cookiealert");
    var acceptCookies = document.querySelector(".acceptcookies");

    cookieAlert.offsetHeight; // Force browser to trigger reflow (https://stackoverflow.com/a/39451131)

    if (!getCookie("acceptCookies")) {
        cookieAlert.classList.add("show");
    }

    acceptCookies.addEventListener("click", function () {
        setCookie("acceptCookies", true, 60);
        cookieAlert.classList.remove("show");
    });
})();

// Cookie functions stolen from w3schools
function setCookie(cname, cvalue, exdays) {
    var d = new Date();
    d.setTime(d.getTime() + (exdays * 24 * 60 * 60 * 1000));
    var expires = "expires=" + d.toUTCString();
    document.cookie = cname + "=" + cvalue + ";" + expires + ";path=/";
}

function getCookie(cname) {
    var name = cname + "=";
    var decodedCookie = decodeURIComponent(document.cookie);
    var ca = decodedCookie.split(';');
    for (var i = 0; i < ca.length; i++) {
        var c = ca[i];
        while (c.charAt(0) === ' ') {
            c = c.substring(1);
        }
        if (c.indexOf(name) === 0) {
            return c.substring(name.length, c.length);
        }
    }
    return "";
}
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