Alerts

Wrap any text and an optional dismiss button in .alert and one of the contextual classes for a basic alert message.

Well done! You successfully read this important alert message.
Heads up! This alert needs your attention, but it's not super important.
Warning! Better check yourself, you're not looking too good.
Oh snap! Change a few things up and try submitting again. 
<div class="alert alert-success">...</div>
  <div class="alert alert-info">...</div>
  <div class="alert alert-warning">...</div>
  <div class="alert alert-danger">...</div>