Meldefenster


Meldungen z.B. über dem Menü anzeigen:
https://stackoverflow.com/questions/34279103/bootstrap-alert-on-top-of-navbar

Schließen eines Meldefensters mit Cookie merken:
https://www.codeply.com/p/azCmarhM9X/bootstrap-cookie-alert https://stackoverflow.com/questions/31446298/alert-bootstrap-with-cookie

Nach einer gewissen Zeit von selbst schließen
https://stackoverflow.com/questions/52018956/auto-hide-alert-above-navbar-in-bootstrap



Nur Meldefenster 

<div class="alert alert-danger alert-server" role="alert">
  <button type="button" class="close" data-dismiss="alert">×</button>
  <strong>Moving Servers</strong> You will experience some downtime as we move all of our files onto a new server. This move should be finished on 12/16.
</div>

oder 

<div class="fixed-bottom p-4">
    <div class="toast bg-dark text-white w-100 mw-100" role="alert" data-autohide="false">
        <div class="toast-body p-4 d-flex flex-column">
            <h4>Cookie Warning</h4>
            <p>
            This website stores data such as cookies to enable site functionality including analytics and personalization. By using this website, you automatically accept that we use cookies. 
            </p>
            <div class="ml-auto">
                <button type="button" class="btn btn-outline-light mr-3" id="btnDeny">
                    Deny
                </button>
                <button type="button" class="btn btn-light" id="btnAccept">
                    Accept
                </button>
            </div>
        </div>
    </div>
</div>

Noch eine Version

https://jqueryui.com/dialog/#default

download.php
<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>jQuery UI Dialog - Default functionality</title>
  <link rel="stylesheet" href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
  <link rel="stylesheet" href="/resources/demos/style.css">
  <script src="https://code.jquery.com/jquery-1.12.4.js"></script>
  <script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
  <script>
  $( function() {
    $( "#dialog" ).dialog();
  } );
  </script>
</head>
<body>
 
<div id="dialog" title="Basic dialog">
  <p>This is the default dialog which is useful for displaying information. The dialog window can be moved, resized and closed with the 'x' icon.</p>
</div>
 
</body>
</html>