Ok now I'm confused. Your question stated in the topic is how to addign bar1 or bar2 to a specific page.
1) There is no DIV with an ID of 'bar1' - did you look at the page code? Use a page inspector
2) even if there was, using
HTML Code:
body.home div#bar1;
won't do anything since that is just the CSS Selector and you yave no rule associated with it.
You can't specifically assign bar1 and/or bar2 to a page, but you can ccontrol if they show or not using the CSS rule 'display: none;'.
I would have a general CSS selector/rule to turn them off, then a specific CSS selector/rule to sisplay them on a per page basis