CSS custom just for imput fields

I am trying to set up just a page for subscribe unsubscribe for email marketing.
I can not seem to get the fields name" and email" in the page fluffey.com/email-marketing.
Not like its going to matter although i am trying in regular HTML it looks ok although i rather keep it in word press. Can anyone tell me how to make the fields longer without destroying the scripts of opt in and opt out.

Regards Vinny