Title line-height issue

Hi, thanks for make this plugin I really appreciate it

I have a little problem, I can’t change the line heigth on the title.
on the advanced-post-slider/advps-style.css
I try to incorporate but nothing happen

.advs-title a{
line-height:15px;
font-weight:bold;
text-decoration:none

what can I do?

thank you

http://wordpress.org/plugins/advanced-recent-posts-widget/