title: Bootstrap bs-example
body: <p>I copied CSS code for bs-example from the Bootstrap 3.0.3 docs site. I'm kind of a beginner with CSS, so if anyone could explain me this I would be thankful. </p>
  
  <p>The following code:</p>
  
  <pre><code>/* Echo out a label for the example */
  .bs-example:after {
    content: "Example";
    position: absolute;
    top:  15px;
    left: 15px;
    font-size: 12px;
    font-weight: bold;
    color: #bbb;
    text-transform: uppercase;
    letter-spacing: 1px;
  }
  </code></pre>
  
  <p>It works as expected, </p>
  
  <p><img src="https://i.stack.imgur.com/v9Yw3.png" alt="enter image description here"></p>
  
  <p>but I would like the title, EXAMPLE, can be changeable. I would like to use a tag like  let's say <code>&lt;zd&gt;&lt;/zd&gt;</code>.</p>
  
  <p>Thanks in advance.</p>