title: Bootstrap alignment is not working
body: <p>So I am new to bootstrap and I have just tried one of the examples in there docs and it doesn't show up as expected.</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" integrity="sha384-WskhaSGFgHYWDcbwN70/dfYBj47jz9qbsMId/iRN3ewGhXQFZCSftd1LZCfmhktB"
      crossorigin="anonymous"&gt;
  
  &lt;script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN"
      crossorigin="anonymous"&gt;&lt;/script&gt;
  &lt;script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q"
      crossorigin="anonymous"&gt;&lt;/script&gt;
  &lt;script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl"
      crossorigin="anonymous"&gt;&lt;/script&gt;
  &lt;div class="container"&gt;
      &lt;div class="row"&gt;
          &lt;div class="col align-self-start"&gt;
              One of three columns
          &lt;/div&gt;
          &lt;div class="col align-self-center"&gt;
              One of three columns
          &lt;/div&gt;
          &lt;div class="col align-self-end"&gt;
              One of three columns
          &lt;/div&gt;
      &lt;/div&gt;
  &lt;/div&gt;</code></pre>
  </div>
  </div>
  </p>
  
  <p>The output should be something like below.(If you cant see the image it is three divs with 'One of the three columns' aligned to the top-left, center and bottom right)</p>
  
  <p><a href="https://i.stack.imgur.com/KUtpl.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/KUtpl.png" alt="&lt;https://i.imgur.com/UjFHKhh.png&gt;"></a></p>
  
  <p>But all I am getting are three divs side by side.</p>
  
  <p>Is there something I am missing?</p>