how to put 4 image side by side with bootstrap
<p>hello i want to put 4 image side by side with bootstrap 
with that code only 2 image puts side by side
                                         </p>

<pre><code>   &lt;div class="col-md-6"&gt;
       &lt;a href="#"&gt;&lt;img src="http://placehold.it/250x250" alt="inn_logo" /&gt;&lt;/a&gt;
   &lt;/div&gt;
   &lt;div class="col-md-6"&gt;
       &lt;a href="#" &gt;&lt;img src="http://placehold.it/250x250" alt="ccs_logo" /&gt;&lt;/a&gt;
   &lt;/div&gt;
</code></pre>

<p>
i want to put 4 images side by side
how can id o it?</p>