lucy24 - 5:29 pm on Dec 17, 2012 (gmt 0)

Have you started with the basics?

Validate everything in sight.

Put a visible border on assorted elements so you can easily see if they're where you thought they were.

You will have to explain the difference between "preview" and "live view" because this sounds application-specific. (For example when I say preview it means the text editor's built-in www preview, which uses webkit and is therefore almost identical to Safari, while "live" can mean either MAMP or, well, live.)