title: Placing <label> text inside the border of a text input
body: <p>I'm looking get this code:</p>
  
  <pre><code>&lt;form id="first_name"&gt;
      &lt;div class="form-group"&gt;
           &lt;label&gt;First name&lt;/label&gt;
           &lt;input type="text" class="form-control input-lg" /&gt;
      &lt;/div&gt;
  &lt;/form&gt;
  </code></pre>
  
  <p>To look like this </p>
  
  <p><a href="https://i.stack.imgur.com/qUzLB.png" rel="noreferrer"><img src="https://i.stack.imgur.com/qUzLB.png" alt="enter image description here"></a> </p>
  
  <p>minus the colors, checkbox, value, etc. Essentially I want it to look just like a legend tag does in a field set but without either tags and the label inside the border of the text input. Thanks in advance!</p>