Twitter Widget text being resized

Hi there again, I’ve been experimenting and found this snippet of code in the CSS

#sidebar p, #sidebar li {
	color: #827060;
	font: 0.9em/1.5em Tahoma, Arial, Helvetica, sans-serif;
	}

I adjusted the 0.9 part. it was on 0.7. We are getting closer. It changed the font of the text in the twitter widget, but also increased the text size of everything else in the sidebar as well. How can you adjust ONLY the twitter widget?

Thank you!!