Styling Custon Fields

Hi I have embeded the custom fields block into my page tamplate.

I could use some tips on styling the output.

See page - http://www.students4work.co.uk/vacancies/test-vacancy/

Looking with firebug I can see the Div is this,
<div class="ct-custom-field-block">

Where you can see - Job Title Part time sales, this is one of my custom fields. The text 'Job title' is the field name and 'Part time sales' is what has been entered into the custom post.

How can I style these differently - is there a reference quide for CSS for styling the output of this plug in?

Advice much appreciated.
Regards
Mark