SproutCMS

source of /sprout/views/admin/message_bad_browser.php

<div class="message-bar-warning">
    <p>Your web browser is not offically supported by the Sprout 3 admin control panel.</p>
    <p>Supported browsers are:
    <ul>
        <li><a href="http://www.mozilla.com/firefox/">Firefox</a>;
        <li><a href="http://www.google.com/chrome/">Chrome</a>; and
        <li><a href="http://www.microsoft.com/windows/Internet-explorer/">Internet Explorer</a> version 10 and higher.
    </ul>
</div>