The CSS attributes you add are color:#00ff88 and font-size:90% or whatever size you desire.
If you post the whole code of your webpage, I can help clean it up some. As it stands now, without knowing 1.) which document type the HTML file is, 2.) whether you're using external, internal, or prefer in-line styles, and 3.) the code above and around that which you supplied, your code can be changed to this:
Apologies if I don't respond to your reply immediately. I don't check this site daily, but you're welcome to PM me as a reminder.