Change Sidebar Font Size

I’m trying to figure out which CSS governs the font size on the sidebar/widget bar and hoping I can get some assistance. I’ve already figured out that the sidebar headings are:

.widget > h3 { font-size: 20px; font-weight: 600; margin: 0 -50px 10px; padding: 0 50px; }

But how do I change the size of the text in the actual widget? Say, the links or the titles of the recent posts. I’d like to increase the size.