No problem for the confusion, that's what we're here for. You should be able to add that block of code to the bottom of the following file:
www.thetigress.de/templates/thetigress_w...ut3/css/template.css
It should, honestly, work in any file that's loaded on the page though. The code I gave is very specific, which means that it should overwrite any other more generic styles that may also apply to that element. When I look at that file though, I don't see the change in there. I'm assuming you removed it. If you add it again, and it doesn't work, leave it in there so we can see better what's going wrong.
As for the notifications, looks like you found a bug! When auto-login is enabled, it looks like the notifications aren't working. If you are ok making a very, very minor code change, you can fix the problem by editing the /plugins/system/jfbcsystem/jfbcsystem.php file. Around line 210, you'll see the following block:
if ($this->configModel->getSetting('facebook_auto_login') && $guest && !$autoLoginPerformed)
{
$status = 'status: true,';
// get Event Notification subscriptions
$subs = "\nFB.Event.subscribe('auth.authResponseChange', function(response) {jfbc.login.on_login();});";
} elseEdit the $subs line and simply add a . (period) before the = sign, so it looks like:
$subs .= "\nFB.Event.subscribe('auth.authResponseChange', function(response) {jfbc.login.on_login();});";
Hopefully that will fix you right up, but let us know how it all goes!
Alex