Mulitple form CSS issues « Gravity Support Forums

Hello,

So I am not terribly new to the CSS world, but I am having a little bit of difficulty with the forms, and after spending awhile searching the forum, I thought it would be best to submit my own.

firstly, I found this very helpful link: http://www.gravityhelp.com/resources/cssguide/css_guide.html

So obviously now I can easily edit the forms in the custom style sheet of my theme. I want to change the background color of my second gravity form, not my first. So I wrote the simple

'.gform_wrapper {background-color:#cccccc;}'

which worked, but changed both forms, so according to the link above, I changed it to

'.gform_wrapper_2 {background-color:#cccccc;}'

but that did not work. Thinking maybe I had to now call out both to avoid CSS confusion I did

'.gform_wrapper_1 {background-color:#000000;}
.gform_wrapper_2 {background-color:#cccccc;}'

but to no avail.

Please help. I need to know how to change the background for my form ID 2 without changing for ID 1!

Thanks!