Adding byline to posts

I’ve read that the ability to add a byline on posts in WordPress is theme-specific. It appears that Zillah does not support this feature. Is there any way that I can automatically add bylines to every post with my name as the author — either via a plugin or by CSS code — even though Zillah doesn’t offer them? I am the only author on my site, so I’m not concerned about flexibility for multiple authors; I just want to show my name as the author of each article before the main text. (I am already using the Simple Author plugin, which adds author information at the END of each post, but I’d also like a simple byline to appear at the beginning, both on individual posts and on the homepage.)

Also, I am currently using the Under Construction plug-in, so I can’t give you a link to my site. But if you need me to upload screenshots, let me know.

Thanks,
Jeremy