Lightbox Button on Home Page

Hello,

So I am using the "Lightbox Form Button" feature on my site to hide my forms. I am using this feature on a couple of my pages. I have a css code I got from this forum to change the color and size. The code I got off this forum works on my other pages, but not on my HOME page. Can anyone share a code that will work not just on all my other pages, but my home page as well?

I am using version 7.1

Thanks!