Hide Region on specific Node or Page Drupal 7 using css

Add this to your custom css page.  The below is what I used to hide a sidebar region on NODE 508.  Replace the 508 with your NodeID and whatever you would like to change in the additional selectors.

.page-node-508 #right-sidebar{
  display:none;
}

You can use this css to do any kind of theming on a specific node. :)

Another example is 

.page-node-508 #title-wrapper h1 {
  color: red;
}

This make the title on that node red but no other nodes. :)