Centering Forms (center everything in module)

Hey,

Seems like a silly question, so forgive me, but I'm trying to center the text and form <form class="gk-form"> and when setting up a class I can't seem to center both text and form (two buttons). I've tried using 'text-align', only does text. Used 'margin-left' but wasn't right. What should I use?

Weird thing is on the top of the page I have a button there too and I just centered within the custom html module, between <div> tags. But it doesn't seem to take on the bottom module. ??

Bottom of this page: web.ear-trumpet.net

Appreciate the help.

Best,
Nicol

Also, I want to style this module exactly the same throughout the site. Can I style it this way without having to add a new line of code for each page?

ie. mainpage is 'imageBg' #gkBottom6 ....
about page is 'noMainbody #gkBottom6 ....

etc etc

So I have manually put in page suffixes in the template manager (eg 101=imageBg, 103=noMainbody etc etc) How do I have a style for every page?