John Regan

<p>Add Custom CSS to your WordPress site without any hassles.</p>
<p>An easy-to-use WordPress Plugin to add custom CSS styles that override Plugin and Theme default styles. This plugin is designed to meet the needs of administrators who would like to add their own CSS to their WordPress website. Styles created with this plugin will render even if the theme is changed.</p>
<p><strong>New in Version 4.0.7</strong></p>
<ul>
<li>Tested for compatibility with WP 6.7.2</li>
<li>Tested for compatibility with PHP 8.4</li>
</ul>
<h3>Features</h3>
<ul>
<li>AMP Support</li>
<li>Customizer Control (live preview)</li>
<li>Useful Code Syntax Highlighter</li>
<li>Code linting (error checking)</li>
<li>No configuration needed</li>
<li>Simple interface built on native WordPress UI</li>
<li>Virtually no impact on site performance</li>
<li>No complicated database queries</li>
<li>Thorough documentation</li>
<li>Allows Administrator access on WP Networks (Multisite)</li>
</ul>
<h3>Usage</h3>
<ol>
<li>
<p>Navigate to Appearance > Custom CSS in the Admin Menu</p>
</li>
<li>
<p>Enter in valid CSS styles</p>
</li>
<li>
<p>Click “Update Custom CSS”</p>
</li>
<li>
<p>View your changes in the Front End of your website</p>
</li>
</ol>
<h3>Help</h3>
<p><a href="https://github.com/johnregan3/simple-custom-css/wiki" title="Simple Custom CSS Wiki" rel="nofollow ugc">Simple Custom CSS Wiki</a></p>
<p><a href="https://wordpress.org/support/plugin/simple-custom-css" title="Support Forum" rel="ugc">Support Forum</a></p>


Simple Custom CSS Plugin

This is one of the best Custom CSS Plugin I've ever used. I've been using it since 2016. This plugin works very well.

Simple but works really good.

Add Custom CSS to your WordPress site without any hassles.

thom4

fabrizim

<p><a href="http://lesscss.org" rel="nofollow ugc">LESS</a> is a templating language based on top of CSS. It provides numerous enhancements to speed up development and make its maintenance easier.</p>
<p>Theme developers can even bundle the plugin without worrying about conflicts: just include the special <code>bootstrap-for-theme.php</code> and read its instructions.</p>
<h4>Features</h4>
<ul>
<li>Variables</li>
<li>Mixins (inheritance of rules)</li>
<li>Nested Rules (write less, do more)</li>
<li>Accessors (inherit a value from a specific rule)</li>
<li>Functions (logic operations for dynamic results)</li>
</ul>
<p>The plugin lets you concentrate on what you need: coding CSS. Everything else is handled automatically, from cache management to user delivery.<br />
Seriously.</p>
<h4>Documentation</h4>
<p>Advanced topics on how to use the plugin API are <a href="https://github.com/oncletom/wp-less/tree/master/doc" rel="nofollow ugc">available on the Github project documentation</a>.</p>
<h4>Requirements</h4>
<p>The sole requirement is to use WordPress API and LESS convention: the <code>.less</code> extension.</p>
<p><strong>Minimal Requirements</strong>: PHP 5.3 and WordPress 3.2.<br />
<strong>Relies on</strong>: <a href="http://lessphp.gpeasy.com/" rel="nofollow ugc">Less.php</a>, <a href="https://wordpress.org/extend/plugins/plugin-toolkit/" rel="ugc">plugin-toolkit</a>.</p>
<p><em>Notice</em>: in case you’d like to drop the usage of this plugin, it’s safe to do it. You will just need to convert back your stylesheets to CSS.</p>


WP-LESS

Implementation of LESS (Leaner CSS) in order to make themes development easier.

Simple Custom CSS Plugin vs WP-LESS