Daniele De Santis

<p>WP Add Custom CSS allows you to <strong>add custom CSS</strong> to the <strong>whole website</strong> and to <strong>individual posts, pages and custom post types</strong> (such as <strong>Woocommerce products</strong>).<br />
The CSS rules applied to the whole website will override the default stylesheets of your theme and plugins, while the CSS rules applied to specific pages, posts or custom post types will override the main stylesheet too.</p>
<p>The plugin works with the most popular builders, such as <strong>Elementor, Gutenberg and the Classic Editor</strong>.</p>
<p>You can edit the main stylesheet from the the “Add custom CSS” settings page.<br />
The plugin also creates a new “Custom CSS” box in the editing area to <strong>add custom CSS to specific posts, pages and custom post types</strong>.</p>
<p>Select the preferred CSS output method from the plugin’s settings page to ensure seamless integration with <strong>caching and minification plugins</strong> or to improve <strong>above-the-fold rendering performance</strong>.</p>


WP Add Custom CSS


Says it has not been tested against recent versions, but it works great still. Simple and elegant solution. Sep 13 2024


Still works great

Add custom css to the whole website and to specific posts and pages.

Kevin Batdorf

<p>The missing inline block CSS editor for the Gutenberg editor. Very powerful with synced patterns as well. And it pairs well with global styles.</p>
<p>This plugin is perfect for users looking to add CSS for blocks without needing to create a child theme, or use a bloated plugin. Client safe too. CSS won’t leak outside of the block, and only valid block CSS is persisted.</p>
<p>Star it on <a href="https://github.com/KevinBatdorf/pattern-css" rel="nofollow ugc">GitHub</a><br />
Follow me on Twitter <a href="https://twitter.com/kevinbatdorf" rel="nofollow ugc">@kevinbatdorf</a></p>
<h4>How to</h4>
<ul>
<li>Every block will have a new “Pattern CSS” settings panel</li>
<li>Open it and add any CSS. It will be scoped to the block</li>
<li>To target the block directly, you must use the <code>[block]</code> selector</li>
<li>To target any element <em>inside</em> the block, use the normal CSS selector</li>
<li>Use <code>!important</code> to override your theme styles (use sparingly)</li>
</ul>
<h4>Global Editor</h4>
<ul>
<li>Access global styles under the options menu (three dots) in the top right corner of the editor</li>
<li>Additionaly, you can open from the Pattern CSS block editor controls</li>
</ul>
<h4>Features</h4>
<ul>
<li>Powered by WebAssembly for fast and secure CSS parsing</li>
<li>Smart loading. Only loads the CSS when the block is present</li>
<li>Styles persist when changing themes</li>
<li>Scopes styles to the block so that parent/sibling blocks are not affected</li>
<li>It’s fast</li>
<li>CSS is minified and optimized</li>
<li>It’s safe. Invalid, non-spec CSS is never persisted</li>
<li>Supports reusable (synced or not-synced) patterns</li>
<li>See changes on the page as you make them</li>
<li>Combines adjacent rules (to decrease size)</li>
<li>Minifies colors and math functions to simplify according to spec</li>
<li>Supports CSS nesting</li>
</ul>
<h4>Basic Example</h4>
<pre><code>/* Target the block directly */
[block] {
  background: antiquewhite;
  padding: 2rem;
}
/* Target any inner elements */
a {
  text-decoration-color: burlywood;
  text-decoration-thickness: 2px;
  text-decoration-style: solid !important;
}
a:hover {
  text-decoration-color: darkgoldenrod;
}

/* Output: */
.pcss-a1b7b016{background:#faebd7;padding:2rem}.pcss-a1b7b016 a{text-decoration-color:#deb887;text-decoration-thickness:2px;text-decoration-style:solid!important}.pcss-a1b7b016 a:hover{text-decoration-color:#b8860b}
</code></pre>
<h4>Supports Media Queries</h4>
<pre><code>@media (prefers-color-scheme: dark) {
  [block] {
    border-color: blue;
  }
}

/* Output: */
@media (prefers-color-scheme:dark){.pcss-cddaa023{border-color:#00f}}
</code></pre>
<h4>Combines Rules</h4>
<pre><code>[block] {
  color: red;
}
.bar {
  color: red;
}

/* Output: */
.pcss-3aa0f0fc,.pcss-3aa0f0fc .bar{color:red}
</code></pre>
<h4>Fixes redundant properties</h4>
<pre><code>[block] {
  padding-top: 5px;
  padding-left: 50px;
  padding-bottom: 15px;
  padding-right: 5px;
}

/* Output: */
.pcss-3aa0f0fc{padding:5px 5px 15px 50px}
</code></pre>
<h4>Supports CSS nesting</h4>
<pre><code>[block] {
  padding: 1rem;
  a {
    color: red;
  }
  background: white;
  /* Including media queries */
  @media (prefers-color-scheme: dark) {
    background: black;
    color:white;
  }
}

/* Output: */
.pcss-f526bb2d{background:#fff;padding:1rem;& a{color:red}@media (prefers-color-scheme:dark){&{color:#fff;background:#000}}}
</code></pre>
<p>Check browser support for <a href="https://caniuse.com/css-nesting" rel="nofollow ugc">CSS nesting</a></p>


Pattern CSS – The CSS Editor For Blocks


This is exactly what I need. Very easy to use. Love that you can scope to current item with [block] {}



JANUARY 2025 UPDATE: after a year of use and having installed on at least 20 client sites, I now look at this as indispensable to my work as a website developer. No complaints whatsoever.


really, really great CSS control

Add a CSS editor to your blocks and patterns! Loads only where necessary. Supports adding global CSS too.

WP Add Custom CSS vs Pattern CSS – The CSS Editor For Blocks