Alerts are a handy element you can drop into a form or inline on a page to communicate success, warnings, failure or just information. They'll conform to 100% of the container width you put them in.
Building an alert using our predefined class is super-easy, you only need a block-level element with a class of .alert-box(we usually use a <div>). You may also include an anchor with a class of .closeto create a close box.