title: Space between Bootstrap 3 buttons
body: <p>If I put several Bootstrap 3 buttons in a row:</p>
  
  <pre><code>    &lt;button class="btn btn-default"&gt;Button 1&lt;/button&gt;
      &lt;button class="btn btn-default"&gt;Button 2&lt;/button&gt;
      &lt;button class="btn btn-default"&gt;Button 3&lt;/button&gt;
  </code></pre>
  
  <p>there is a small space between them. Where does it come from and how to remove it without using float? According to the Firebug and Chrome Inspector the buttons haven't any margin applied to them.</p>