This discussion is meant to be sort of a help thread for customising ones profile. I spent a couple of hours giving my profile an overhaul and whilst doing so learned a few nifty tricks.
For example, if one types:
body{background-repeat:no-repeat;background-attachment:fixed;background-position:left top;}
In the 'advanced' sheet, in the customisation menu, one can make the background picture stick to the background.
If you know any other tricks then please share them here!