title: How to full width in one button in a group
body: <p>I want to make full with the button on right side.
  I added btn-block on button element but it's dont working i don't know why.</p>
  
  <p><a href="https://jsfiddle.net/u1r5ddu0/1/" rel="nofollow noreferrer">Jsfiddle Here</a></p>
  
  <pre><code>&lt;div class="fieldset"&gt;
      &lt;div class="field qty"&gt;
          &lt;label class="label" for="qty"&gt;&lt;span&gt;Qlty&lt;/span&gt;&lt;/label&gt;
          &lt;div class="control control-qty-cart"&gt;
              &lt;span class="quantity-controls quantity-minus"&gt;&lt;/span&gt;
              &lt;input type="number" name="qty" id="qty" maxlength="12" value="1" title="Aantal" class="qty-default input-text qty" data-validate="{&amp;quot;required-number&amp;quot;:true,&amp;quot;validate-item-quantity&amp;quot;:{&amp;quot;minAllowed&amp;quot;:1}}"&gt;
          &lt;/div&gt;
      &lt;/div&gt;
      &lt;div class="actions"&gt;
          &lt;button type="submit" title="In Winkelwagen" class="action primary tocart btn-block" id="product-addtocart-button"&gt;
              &lt;span&gt;In Winkelwagen&lt;/span&gt;
          &lt;/button&gt;
      &lt;/div&gt;
  &lt;/div&gt;
  </code></pre>