dwieeb

With this plugin, you will be able to include certain CSS or JS files in only selected posts, pages, or other post types, instead of including them everywhere. You can also edit inline CSS & JS and include CSS & JS files from anywhere on specific posts and pages.
It places meta boxes in the WordPress post editor so it’s easy to select which files you want to include with the post you’re currently editing. This plugin works well for all websites, large and small, and it works well with WordPress multi-site (WordPress MU). Tested up to 3.1 beta 2.
See this plugin’s <a href="http://www.danielimhoff.com/wordpress-plugins/specific-files/" rel="nofollow ugc">page</a> on my website for information/comments/questions. I am open to the idea of suggestions and patches to this plugin! If you enjoyed this plugin, please <a href="http://www.danielimhoff.com/donations/" rel="nofollow ugc">donate</a> or <a href="http://www.danielimhoff.com/donations/" rel="nofollow ugc">say thanks</a>.
Todo:
<ul>
<li>Add a “remove references” button on the options page so people can remove file references without having to delete the file.</li>
</ul>

Specific Files

This plugin allows you to include CSS or JS files in specific posts and pages.

SunilPrajapati

DESCRIPTION
Easy Custom Css/Js plugin allow user to add custom css and js for wordpress site wihtout managing files.
KEY FEATURES 
<ul>
<li>It is simple to use with multiple option.</li>
<li>Permits customers to write css for mobile, tablet, and laptop, and desktop.</li>
<li>Allow to add custom Javascript and Jquery.</li>
<li>Reach Editor to make editing easy.</li>
<li>Allow to set CSS for Specific Post or Page.</li>
</ul>
For More Information, Please <a href="http://sunilprajapati.in/easy-custom-cssjs/" rel="nofollow ugc"> Click Here </a>

Easy Custom Css/Js

Add custom css to specific posts and pages and also option for responsive css, sass, less And Javascript.

Specific Files vs Easy Custom Css/Js