<div class="alert alert-error">
<button type="button" class="close" data-dismiss="alert">×</button>
<strong>Alert<strong>Change a few things up and try submitting again.</div> 

<div class="alert alert-succes">
<button type="button" class="close" data-dismiss="alert">×</button>
<strong>Success!<strong>You successfully read this important alert message.</div> 

<div class="alert alert-info">
<button type="button" class="close" data-dismiss="alert">×</button>
<strong>Info!<strong>This alert needs your attention, but it's not super important.</div>