body class targetting not working…

Hey all, I have a problem I can’t figure out.

I’m trying to change the css under ONE page, but using the body class has NO effect whatsoever.

for example

.home customize-support #page {
   STYLING HERE
}

.home customize-support Is the class name according to firebug.

Has NO EFFECT and the original style of the page id still takes effect, even if I use !important. I have no idea why it doesn’t work either. What could be the problem?

Thanks in advance!