title: Why does placing text directly in a <div class"col"> break the bootstrap column system
body: <p>This may be a foolish question, but why does this jsbin link: </p>
  
  <p><a href="https://jsbin.com/gukidacero/edit?html,output" rel="nofollow noreferrer">https://jsbin.com/gukidacero/edit?html,output</a></p>
  
  <p>Handle the bootstrap column system incorrectly by stacking "col stack vertically" vertically when there is text directly in the div class "col".  What am I doing wrong?  I have seen examples like this on bootstrap's page.</p>
  
  <p>For me in jsbin the output looks like:
  <br><br>col stack horizontally col stack horizontally
  <br>col stack vertically
  <br>col stack vertically
  <br>col stack vertically
  <br>col stack vertically</p>
  
  <pre><code>&lt;!DOCTYPE html&gt;
  &lt;html&gt;
  &lt;head&gt;
    &lt;meta charset="utf-8"&gt;
    &lt;meta name="viewport" content="width=device-width"&gt;
    &lt;title&gt;JS Bin&lt;/title&gt;
  &lt;/head&gt;
  &lt;body&gt;
  &lt;script src="https://code.jquery.com/jquery.min.js"&gt;&lt;/script&gt;
  &lt;link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" rel="stylesheet" type="text/css" /&gt;
  &lt;script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"&gt;&lt;/script&gt;
  
    &lt;div class="container"&gt;
      &lt;div class="row"&gt;
        &lt;div class="col navbar-text"&gt;col stack horizontally&lt;/div&gt;
        &lt;div class="col navbar-text"&gt;col stack horizontally&lt;/div&gt;
      &lt;/div&gt;
    &lt;/div&gt;
  
  
    &lt;div class="container"&gt;
      &lt;div class="row"&gt;
        &lt;div class="col"&gt;col stack vertically&lt;/div&gt;
        &lt;div class="col"&gt;col stack vertically&lt;/div&gt;
        &lt;div class="col"&gt;col stack vertically&lt;/div&gt;
        &lt;div class="col"&gt;col stack vertically&lt;/div&gt;
      &lt;/div&gt;
    &lt;/div&gt;
  
  &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>