Bootstrap3 btn-group-justified not working?
<p>I am trying to do this:
<a href="https://i.stack.imgur.com/3bzcm.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/3bzcm.png" alt="enter image description here"></a></p>

<p>This is the code:</p>

<pre><code>&lt;div class="row"&gt;
    &lt;div class="col-md-3"&gt;
        &lt;div class="btn-group btn-group-justified"&gt;
            &lt;button type="button" class="btn btn-danger"&gt;Proveedor&lt;/button&gt;
            &lt;button type="button" class="btn btn-danger dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false"&gt;
              &lt;span class="caret"&gt;&lt;/span&gt;
            &lt;/button&gt;
            &lt;ul class="dropdown-menu"&gt;
              &lt;li&gt;&lt;a href="#"&gt;Action&lt;/a&gt;&lt;/li&gt;
              &lt;li&gt;&lt;a href="#"&gt;Another action&lt;/a&gt;&lt;/li&gt;
              &lt;li&gt;&lt;a href="#"&gt;Something else here&lt;/a&gt;&lt;/li&gt;
            &lt;/ul&gt;
        &lt;/div&gt;    
    &lt;/div&gt;
    &lt;div class="col-md-3"&gt;
    &lt;/div&gt;
    &lt;div class="col-md-3"&gt;
    &lt;/div&gt;
    &lt;div class="col-md-3"&gt;
    &lt;/div&gt;
&lt;/div&gt;
</code></pre>

<p>But "btn-group-justified" seems to be not working.</p>

<p>I have tried also this way:</p>

<pre><code>&lt;div class="btn-group btn-group-justified"&gt;
    &lt;a type="button" class="btn btn-danger"&gt;Proveedor&lt;/a&gt;
    &lt;a type="button" class="btn btn-danger dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false"&gt;&lt;span class="caret"&gt;&lt;/span&gt;
    &lt;/a&gt;
    &lt;ul class="dropdown-menu"&gt;
        &lt;li&gt;&lt;a href="#"&gt;Action&lt;/a&gt;&lt;/li&gt;
        &lt;li&gt;&lt;a href="#"&gt;Another action&lt;/a&gt;&lt;/li&gt;
        &lt;li&gt;&lt;a href="#"&gt;Something else here&lt;/a&gt;&lt;/li&gt;
    &lt;/ul&gt;
&lt;/div&gt;    
</code></pre>

<p>It seems like "btn-group-justified" is not working.</p>

<p>Any solution?</p>

<p>Thank you.</p>