Lian LaRussa on "Custom class in footer widget"

I'm using SilverClean Pro for the theme.

I'm not working on a live site, so I can't provide a link without a password, etc.

Here's the code from the inspector, if this helps:

<li id="text-2" class="one-fourth widget widget_text"> …
<li id="text-3" class="one-fourth widget widget_text">
<h3 class="widget-title">
CONNECT
</h3><div class="textwidget"> … </div><li id="text-4" class="one-fourth widget widget_text"> … <li id="text-5" class="one-fourth widget widget_text"> …

Seems like I just have to be more specific with calling the class in the css, but I'm not having any success with how I'm trying that, if that makes sense.