Joe Dolson

<p>Adds a custom field to your post editing screens to add custom styles applied only on that page or post.</p>
<p>Attach custom styles to any page, post, or custom post type. Separate styles can be attached for print, screen, or mobile. You can also store your own library of frequently-used styles.</p>
<p>How to use the style library:</p>
<ol>
<li>Add the styles you want on your settings page.</li>
<li>Navigate to an article which requires specific styles.</li>
<li>Select the library style from the drop down, leaving the style textarea blank.</li>
<li>Update or post the new document.</li>
</ol>
<p>A newly-selected style from the style library will always overwrite any previous hand-written styles. If you wish to alter the library styles for a specific page, you can do this in the textarea after you’ve saved the page with the style library template.</p>
<p>By default, editing your saved stylesheets will have no impact on previously saved post-specific styles; set the option to pull styles from the library to change this.</p>
<p>Note: custom styles will not be included on archive pages; only on single post/Page views.</p>
<p>The use you’ll get out of this plugin depends on the flexibility of the theme you’re using and your own knowledge of CSS (Cascading Style Sheets).</p>


WP Post Styling

Define custom styles for any post, page, or custom post type. Example: journal-style publications which want to create a unique design for articles.

Andrei Lupu

<p>You can use this plugin to add a unique CSS class to your pages or posts.</p>
<h4>Demo</h4>
<p><a href="https://tastewp.com/" rel="nofollow ugc">TasteWP</a> has prepared a quick WordPress instance with this plugin, so you can give it a try <a href="https://demo.tastewp.com/wp-custom-body-class" rel="nofollow ugc">in this demo</a></p>
<h4>Responsiveness</h4>
<p>There’s a way to add a class to appear only on mobile devices. You can do that by simply adding <code>mobile-</code> on the front of<br />
the class. For example, if you want to have the class “car” for mobile side, you need to use “mobile-car”.</p>
<h4>Support me</h4>
<p>If you find this plugin helpful, or you just want to send me a coffee here are the ways:</p>
<ul>
<li>Use the Github Sponsor button</li>
<li><a href="https://ko-fi.com/thelup" rel="nofollow ugc">Ko-fi</a></li>
<li>Watch me coding on <a href="https://www.twitch.tv/thelup/" rel="nofollow ugc">twitch.tv/thelup</a></li>
<li>Or simply visit my site <a href="https://a.lup.dev/" rel="nofollow ugc">lup.dev</a> and make those analytics ring the bells.</li>
</ul>


Custom Body Class

A plain simple plugin which allows you to add a custom CSS class the HTML body tag.

WP Post Styling vs Custom Body Class