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

nivijah

Custom CSS classes for images

This simple plugin adds two additional fields to the media window, that lets you set additional classes to images on top of the default ones.

Chitraa

chitra

Insert Body Class Plugin for WordPress

Allow you to add Body Class in any page or post, just easily

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.

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