I have been using
Google Docs quite often since its launch sometime last year, since then, the service has gone through pretty good number of changes, like addition of
forms feature in Google Docs Spreadsheet application. The latest in the series is the
addition of Styles.
From now on, you can edit the CSS of your document in Google Docs to add some styling. However, the point to remember is that CSS editing is an advanced subject and you should play with it only if you happen to be an expert in it. If you are new to the subject of CSS, a simple google search for “CSS Examples” or “CSS Tutorials” is a good place to start.