CSS and <a href> issue - html

Question

I have a rollover effect over an image which can be seen here: http://www.sdimmigrationlawyers.com/ (bottom of page - deportation image)
I want to add a link to it, but my tag isn't working. How should I implement it to (1) have the rollover effect, and (2) have the link?
CSS:
<div class="view view-sixth">
<img class="alignleft wp-image-335 size-full" alt="" src="http://www.sdimmigrationlawyers.com/wp-content/uploads/2015/06/deportation.jpg">
<a href="http://www.sdimmigrationlawyers.com/immigration-services/deportation-defense">
<div class="mask"></div>
</a>
<p>
</p>
<div class="content">
<h2>Deportation Defense</h2>
</div>
</div>
HTML:
<div class="paragraph_dui_crime_box2">
<h2>San Diego Deportation Lawyer</h2>
<div class="view view-sixth">
<img class="alignleft wp-image-335 size-full" src="http://www.sdimmigrationlawyers.com/wp-content/uploads/2015/06/deportation.jpg" alt="" />
<a href="http://www.sdimmigrationlawyers.com/immigration-services/deportation-defense">
<div class="mask"></div>
</a>
<div class="content">
<h2>Deportation Defense</h2>
</div>
</div>

Answer 1

You could try wrapping the <a> tag around the whole section like so :
<a href="http://www.sdimmigrationlawyers.com/immigration-services/deportation-defense">
<img class="alignleft wp-image-335 size-full" alt="" src="http://www.sdimmigrationlawyers.com/wp-content/uploads/2015/06/deportation.jpg">
<div class="mask"></div>
<p>
</p>
<div class="content">
<h2>Deportation Defense</h2>
</div>
</a>

Answer 2

Your code with the headline "CSS" is HTML, so I assume it's what's the HTML-code of your page.
If you haven't any restrictions in HTML-markup, do the following and make sure that the DIV with the h2 is wrapped in an anchor leading somewhere:
<a href="...">
<div class="content"><h2>Deportation Defense</h2></div>
</a>
Currently, your anchor surrounds something with no content (that is not clickable), the content on the other side is not properly wrapped in an anchor (so it's neither clickable).