css navbar responsive padding issue
<p>I have a navbar every thing looks great until it goes responsive. the bottom drop down has a 5 px gap all the way around it.</p>

<p><a href="https://jsfiddle.net/nc2hamed/5/" rel="nofollow">https://jsfiddle.net/nc2hamed/5/</a></p>

<p>i have tried adding and removing padding on the</p>

<pre><code>.expand {
    max-height: 40em;   
}
</code></pre>