bootstrap alert samples

<div class="alert alert-success">
  <strong>Success!</strong> Success message</a>.
</div>
<div class="alert alert-info">
  <strong>Info!</strong> Alert message</a>.
</div>
<div class="alert alert-warning">
  <strong>Warning!</strong> Warning message</a>.
</div>
<div class="alert alert-danger">
  <strong>Danger!</strong> Danger message</a>.
</div>

<div class="alert alert-success alert-dismissable">
  <a href="#" class="close" data-dismiss="alert" aria-label="close">&times;</a>
  <strong>Success!</strong> Indicates a successful or positive action.
</div>

<div class="alert alert-danger alert-dismissable">
  <a href="#" class="close" data-dismiss="alert" aria-label="close">&times;</a>
  <strong>Danger!</strong> An error is occured.
</div>