Allow underline on footer menu links

I have a custom menu that I have inserted into the footer widget. The default behavour of the Enfold theme is to not allow the underline to appear when hovering over the text link.

I am trying to override this behaviour in my custom stylesheet within my child theme (for obvious reasons I do not want to edit the parent theme’s layout.css file).

I have tried heaps of different ways of css (even making it more specific) but nothing seems to work. Here is my latest attempt:

section.widget_nav_menu div.menu-the-fine-print-container ul#menu-the-fine-print li a {
display: block;
color: green;
padding:4px 0px 5px 0;
text-decoration: underline!important;
}

But nothing seems to work at all. Here is the page in development http://ausidentities.coolwebs.com.au/