Aaron T. Grogg

When in Admin mode, this plug-in adds classes to the <code><body></code> tag to let 
your CSS know where you are.
For example, if you are viewing the list of all your Posts, you would get this additional class: 
 edit-list-post 
And, when you are editing a Post, something like this: 
 edit-page-post
Alternatively, for custom posts, for example “movie”, you would see either: 
 edit-list-movie 
or: 
 edit-page-movie
This allows you to write custom CSS and JS to interact with these varying edit pages within WP.
Please let me know if you have any questions/suggestions/thoughts, 
Atg

Add Custom Post Type Slugs to Admin Body Class

Add Custom Post Type Slugs to Admin &lt;body&gt; Class

trauben-nuss

This plugin adds a abbreviation of the operating system (win, mac, linux, iPad, iPhone) to the body-tag. 
So if there’s a OS-specific difference, you can easily react to it by using the css-selector (e.g. “.mac”).
Next steps of this plugin: 
* adding a settings page 
* add the class to specified elements 
* add user-language-abbreviation to specified elements
let me know, if you wish something helpful.

OS Adder

Add the operating-system's abbreviation as a CSS-Class to the body-tag.

Add Custom Post Type Slugs to Admin Body Class vs OS Adder