title: BS3 - img-responsive class - why no max height?
body: <p>bootstrap 3 includes the <code>.img-responsive</code> class
  which applies these css settings</p>
  
  <pre><code>display: block;
  height: auto;
  max-width: 100%;
  </code></pre>
  
  <p>why is there no <code>max-height:100%;</code>?</p>
  
  <p>I found adding this makes the pictures fit in terms of height as-well, but I'm not sure why it's being left out and not sure what the consequences are across other browsers.</p>