Changing the font of my widget


All I want to do is change the font of the widget on my website ( That’s all. From arial to courier, from 12pt to 10pt. THE FONT. That’s it. And I have to be like a level 10 black belt hacker to do it with php, js, css and like 9 different websites tutorials. What the heck, Twitter? This 1.1 change is INSANE.