apply css for particular node and do not apply for particular node I used the CSS injector module to replace the default CSS. I applied that CSS for  paths like node/*. How do I exclude node/add from that CSS (the one I created with the CSS injection module)?
This is the sort of thing that I'd do by code, but that's because that's just the way I roll.

In the template.php you will want something like:

function MYTHEME_preprocess_node($vars) {
  if (drupal_get_path_alias(current_path()) == 'node/add') {
    drupal_add_css(drupal_get_path('theme', 'MYTHEME') . "/css/foo.css");
  }
}


I hope this helps.. :)