John Regan

Add Custom CSS to your WordPress site without any hassles.
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.
New in Version 4.0.7
<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>
Navigate to Appearance > Custom CSS in the Admin Menu
</li>
<li>
Enter in valid CSS styles
</li>
<li>
Click “Update Custom CSS”
</li>
<li>
View your changes in the Front End of your website
</li>
</ol>
<h3>Help</h3>
<a href="https://github.com/johnregan3/simple-custom-css/wiki" title="Simple Custom CSS Wiki" rel="nofollow ugc">Simple Custom CSS Wiki</a>
<a href="https://wordpress.org/support/plugin/simple-custom-css" title="Support Forum" rel="ugc">Support Forum</a>

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.

atmistinc

<a href="https://snazzymaps.com/plugins" rel="nofollow ugc">Snazzy Maps</a> adds styles to your existing Google Maps with the click of a button.
Features
<ul>
<li>Browse through hundreds of free styles.</li>
<li>Quickly apply styles to all of the Google Maps on your WordPress site.</li>
<li>Works with most Google Maps plugins.</li>
<li>Access your favorites from Snazzy Maps by signing up for an <a href="https://snazzymaps.com/account/developer" rel="nofollow ugc">API key</a>.</li>
<li>Build and customize your own styles on Snazzy Maps and access them through the plugin.</li>
<li>Free to use for personal and open source projects. Affordable licenses for businesses.</li>
</ul>
Please note this plugin does not add a Google Map to your page. It simply adds styles to any existing maps that you 
already have on your site.

Snazzy Maps

I originally posted on here that this plugin added malware to my site because Google's warning in Webmaster Tools indicated that the files from this plugin were infected but it didn't show the warning on any other files. However, after further investigation, this plugin had nothing to do with the malware. So I am updating this review and changing it to 5 stars, because it is in fact a great plugin. To the plugin author, I apologize for the inconvenience of my initial review!



UPDATE: This is a great plugin

Apply styles to your Google Maps with the official Snazzy Maps WordPress plugin.

Simple Custom CSS Plugin vs Snazzy Maps