<style>
form{
background-color: #fff;
margin: 100px auto;
max-width: 330px;
padding: 15px;
-webkit-border-radius: 15px;
-moz-border-radius: 15px;
border-radius: 15px;
}
h2 {
text-align: center;
}
.container{
opacity: 0.95;
}
</style>
<div class="container">
<form class="form-signin" action="" method="post">
<h2 class="form-signin-heading">Authentifizierung</h2><br/>
<input class="form-control" type="password" name="password" placeholder="Passwort" required><br/>
<input class="btn btn-secondary btn-block" type="submit" value="authentifizieren" /><br/>
<p><?php
echo SessionController::getMsg(0);
SessionController::unsetMsg();
?>
</p>
</form>
</div>
