Twenty Fourteen Widget Text

Hello

I apologize if this question sounds basic, but I’m new to WordPress and have little programming knowledge. I’m running the twenty-fourteen theme and trying to modify the text attributes of the primary sidebar. I’m running a widget “Special Recent Posts” that lets me control the articles I’d like featured on the primary sidebar.

I’m able to easily change the widget’s title (though not the attributes) through the styles plugin for twenty-fourteen. Is there any simple code that I could add to my style.css to address this?

I’ve tried using simple commands such as:

.widget .widget-title {
font-family: ‘Actor’, sans-serif;
font-size: 14;
text-transform: uppercase;
}

to edit the widget title, but nothing happens. Similarly, if I use the ‘.widget .content’ style selector, nothing happens, either.

I know that there must be a simple solution to this problem, but it is eluding me. Any help would be greatly appreciated.