title: bootstrap 3 max & min resolutions for col-*
body: <p>I am quite impressed with the latest version of bootstrap. And I have started to work on it. Now I can understand that the grid system works on 4 column class size variants, with the following definition:</p>
  
  <pre><code>col-xs-* ---&gt; mobile
  
  col-sm-* ---&gt; tablet
  
  col-md-* ---&gt; laptops
  
  col-lg-* ---&gt; large monitors
  </code></pre>
  
  <p>However, I need to know, what is the minimum and maximum resolutions for which these classes gets applied on so that I can design the layout better. </p>
  
  <p><strong>I am asking this because, I could see col-md class applied at 800px. I generated this resolution using Firefox's responsive view simulator.</strong></p>