Change "content" .bs-example in Bootstrap CSS

I am trying to deal with the new version of bootstrap (3.3.0) and in particular I am interested in implementing the following tag:

<div class="bs-example"></div>

      

        
        
        
      

    

By default it is generated EXAMPLE

as shown in the document pages.

In particular, I need to change the content

css and I was wondering if this is possible using a tag style

with html.

I can see that the content

css variable seems to be in the class ::after

, but I cannot change that yet with the example.