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Improved Simpler CSS

Add the ability to add css to your existing style sheet.

This Simpler CSS mu-plugin allows WordPress multisite hosts to enable users to add custom stylesheets to their blogs.

The plugin creates a new menu item under the Appearance menu in WordPress 2.7 that allows users to enter custom CSS code that will be injected into the

<head>

section of their blog. The CSS is stored in the blog's options table and is filtered through a standard PHP function before being outputted, preventing the user from inserting malicious code into the header.

For non-WordPress µ blogs, this plugin provides an easy way to modify the appearance of installed themes or plugins (such as Sociable) without modifying theme/plugin files that may change with upgrades. No write access is required to any files for Simpler CSS to function, as it stores its data in the database's options table — and that means theme/plugin upgrades won't impact your custom CSS.

The custom CSS will only show when the theme has the necessary wp_header() function in the <head> section, as most themes now do.

Props go to Jeremiah Orem and Frederick D. who plugin this one is based on.