Hi,
Can you link to your demo site so I can have a look at it?
A really good tool to help identify what CSS elements you are wanting to style is the Firefox Web Developer Toolbar - indispensable really if you want to get into this stuff.
https://addons.mozilla.org/en-US/firefox/addon/60
Once you have installed it you can use Ctrl-Shift-Y while viewing any web page - as you mouse over various elements like the above mentioned Poll you will see above the web page the styles that are being appiled to the element - you can then go into your style sheet and add things to the relevant style or create a new style if their isn't one for the selected element.