Dear CSS Fluent People,

I'm attempting to find a way to give the comments on my blog a black background, as you can see my background's a bit busy for such itty bitty white font.  I'd really like something semi-transparent, but I'm not sure if that would work or I should just stick with solid black.  I've been poking through the CSS code, and it's just been WAY too many years since I worked with HTML, hello geocities.  I tried a couple of things though, because I was raised by programmers so that's how my brain works, but I simply cannot figure out how to give my comments a background, or even change the color of the text.

 

Help.  Please?