5.1.2. Error Alert

Some frameworks generate error flash messages with error modifier. This makes them look just like original Bootstrap’s .alert-danger.

Example

What a mistake!
<div class="alert alert-error alert-dismissible fade in">
    <button type="button" class="close" data-dismiss="alert">&times;</button>
    <span class="glyphicon glyphicon-warning-sign offset-right" aria-hidden="true"></span>
    What a mistake!
</div>