What should I use to write the code for a site


I really need something to run my html and CSS but I don't know what tool I should use to run these. Please tell me if Code academy has anything or if some other tool is available for me. By the way I have a Mac OSX and a chrome acer C7.


Notepad++ is a favorite for many.


That's what browsers are for.

Editing? Check out Brackets which is targeted at front-end developers


Codecademy has Codebits. You can access all of yours here.