Why is my picture link extending beneath the image?
<p>I'm working on a photo page for a site I'm creating, however it seems that the link is extending into the whitespace beneath the image. The problem disappears when I remove the surrounding <code>&lt;section&gt;</code> but I'm not sure why. </p>

<p>Here's a <a href="http://jsfiddle.net/Supergogoman/9t4yn8gy/1/" rel="nofollow">Jsfiddle</a> better showcasing my code and the problem </p>

<p><div class="snippet" data-lang="js" data-hide="false" data-console="true">
<div class="snippet-code">
<pre class="snippet-code-css lang-css prettyprint-override"><code>.photo {
  text-align: center;
  float: left;
  width: 70%;
  margin-left: 8%;
  margin-top: 5%;
  margin-bottom: 5%;
}
.photo a {
  border: 1px solid red;
}
.photo img {
  margin: 1%;
}</code></pre>
<pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;section class="photo"&gt;
  &lt;a href="#"&gt;
    &lt;img src="http://upshout.com/wp-content/uploads/2015/06/dwarf-kitten-01.jpg" /&gt;
  &lt;/a&gt;
  &lt;a href="#"&gt;
    &lt;img src="http://upshout.com/wp-content/uploads/2015/06/dwarf-kitten-01.jpg" /&gt;
  &lt;/a&gt;
  &lt;a href="#"&gt;
    &lt;img src="http://upshout.com/wp-content/uploads/2015/06/dwarf-kitten-01.jpg" /&gt;
  &lt;/a&gt;
&lt;/section&gt;</code></pre>
</div>
</div>
</p>

<p>I added a <code>border</code> to the problem area. Any help is much appreciated!</p>