I can’t help you figuring out whether EE has the CSS you need. You just have to search for it. Perhaps browse through the backends of existing modules and look out for what you need.
Concerning the latter, I’d use the settings_form() method to create my own custom settings form and use the Display Class to either add CSS or include my own stylesheet.
This would be done with $DSP->manual_css or $DSP->extra_css
This would be done with $DSP->manual_css or $DSP->extra_css
I don’t find either in the manual???
Neither of those are on either of these two pages:
http://expressionengine.com/docs/development/usage/display.html
http://expressionengine.com/docs/development/reference/display.html
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