title: bootstrap remove vertical space from rows of thumbnail's grid
body: <p>I am trying to remove vertical space between the rows of a thumbnail's grid as I did for that horizontal but with no success.</p>
  
  <pre><code>.gutter-0.row {
      margin-right: 0;
      margin-left: 0;
      /* not working */
      margin-top: 0; 
      margin-bottom: 0;
  }
  .gutter-0 &gt; [class^="col-"], .gutter-0 &gt; [class^=" col-"] {
      padding-right: 0;
      padding-left: 0;
      /* not working */
      padding-top: 0;
      padding-bottom: 0;
  }
  </code></pre>
  
  <p>HTML</p>
  
  <pre><code>    &lt;div class="row gutter-0"&gt;
          &lt;div class="col-md-4"&gt;
              &lt;div class="thumbnail"&gt;
                  &lt;img src="http://placehold.it/200x200" alt=""&gt;
              &lt;/div&gt;
          &lt;/div&gt;
          &lt;div class="col-md-4"&gt;
              &lt;div class="thumbnail"&gt;
                  &lt;img src="http://placehold.it/200x200" alt=""&gt;
              &lt;/div&gt;
          &lt;/div&gt;
          &lt;div class="col-md-4"&gt;
              &lt;div class="thumbnail"&gt;
                  &lt;img src="http://placehold.it/200x200" alt=""&gt;
              &lt;/div&gt;
          &lt;/div&gt;
      &lt;/div&gt;
      &lt;div class="row gutter-0"&gt;
          &lt;div class="col-md-4"&gt;
              &lt;div class="thumbnail"&gt;
                  &lt;img src="http://placehold.it/200x200" alt=""&gt;
              &lt;/div&gt;
          &lt;/div&gt;
          &lt;div class="col-md-4 col-sm-4"&gt;
              &lt;div class="thumbnail"&gt;
                  &lt;img src="http://placehold.it/200x200" alt=""&gt;
              &lt;/div&gt;
          &lt;/div&gt;
          &lt;div class="col-md-4 col-sm-4"&gt;
              &lt;div class="thumbnail"&gt;
                  &lt;img src="http://placehold.it/200x200" alt=""&gt;
              &lt;/div&gt;
          &lt;/div&gt;
  
      &lt;/div&gt;
  </code></pre>
  
  <p><a href="http://www.bootply.com/7k3xXDUmXR" rel="nofollow">Bootply</a></p>
  
  <p>How could I do?
  Thank you</p>