<div class="container">
<h2>Alerts</h2>
<div class="alert alert-success">
<strong>Success!</strong>
</div>
<div class="alert alert-info">
<strong>Info!</strong>
</div>
<div class="alert alert-warning">
<strong>Warning!</strong> All foelds are required
</div>
<div class="alert alert-danger">
The username is required and can't be empty
</div>
</div>