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How to Add Custom CSS to a Specific Page

Last Update: 05 Nov, 2023

For out-of-the-box customization, Cascading Style Sheets (CSS) is essential.

Time has drastically changed. Now, people can make a website within a single day. This is all possible for the blessings of WordPress. Without any technical knowledge, you can build beautiful and powerful websites.

—But if you want to take the customization to the next level, you must know how to use CSS in WordPress. This vital web design language can make various adjustments to your website that are not possible with the default theme customizer. Make huge changes in the layouts, colors, fonts, etc by adding CSS to WordPress.

If you are new to CSS, you have come to the right spot. We will show you how to add CSS to WordPress pages and why you need to apply CSS.

The best place for adding custom CSS in WordPress

If your theme approves, then you can see live changes by applying CSS in the WordPress theme’s stylesheet. The problem is – changes will be overwritten as soon as you update the theme. As human beings, it is normal to make mistakes. Therefore, the changes that you don’t want to make may be overwritten if you update the theme. Changing the Child theme can be a solution, but it’s too cringy.

That’s why we recommend navigating to the following directions and adding custom CSS to WordPress

  1. Once you are inside the WordPress dashboard, go to –

Appearance > Customize

  1. Select Additional CSS from the left bar

customize CSS

You can add custom CSS codes in the empty section of the editor. It is not complicated at all as you don’t have to shorten the existing style sheet. Add as much as you want and see the changes in the live preview.

It gives you the option if the effect of CSS is right or wrong. If you think the changes are made according to your desire, then you can click the Publish button to set the changes. This way you can validate the effects of CSS and you can roll back if you have made any mistakes.

—Now, you may be wondering how you can implement CSS codes. We will show you how to use custom CSS in WordPress in 2 methods.

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WordPress add custom CSS to a specific page: Two simple methods

You can use CSS in WordPress to change almost all aspects of the appearance of your website. There are no restrictions here. But for now, let’s keep it simple and review some basic adjustments by adding CSS using the Theme customizer and using a plugin.

Add custom CSS using theme customizer

This method is the easiest for adding CSS to WordPress. From the WordPress admin panel, you can add custom CSS directly. In fact, this method is the one that we have discussed earlier.  Users of WordPress 4.7 and higher can implement custom CSS from the theme’s Customize section.

Select a specific page and navigate to Appearance » Customize to start the theme customizer.


This will open a left panel with plenty of options with editing marks. Select Additional CSS from the left panel.

Additional CSS

This will open an empty box to insert custom CSS codes. You will notice the changes from the live preview after adding valid CSS.

Keep on adding custom CSS codes until you are satisfied with the changes. Hit the Publish button to make the changes effective.


The CSS effects will only take effect on the theme that you are currently using. It won’t make any changes to other themes in your library. Do that same to make changes for a particular theme.

Add custom CSS using a plugin

We know, installing additional plugins for adding CSS is not necessary. But adding custom CSS using a plugin can be necessary when you want to keep the changes regardless of the WordPress theme that is being used. So unlike the first method, the CSS effect won’t go away when you change the theme.

For this method, we are going to use the Simple Custom CSS plugin. Install and activate this plugin first. If you don’t know how to install a plugin, learn how to install a plugin first. After successfully activating the plugin, go to Appearance » Custom CSS

Custom CSS

Insert the CSS code and press the Update Custom CSS button to confirm the changes.

Once everything is done, go to your WordPress site to see the changes. Don’t forget to update the plugin to make it compatible with the current WordPress version. Otherwise, changes may not take effect and in a worst-case scenario, it can damage the entire layout.

The best places to learn CSS

There are many useful tutorials on the Internet that can teach you more about CSS. Websites like the W3Schools will come in handy. Just type “Learn CSS” and search in Google. You will automatically find some of the best results and resources like the MDN web docs from Mozilla. These tutorials are great for showing you to add CSS successfully to a WordPress site. They also provide necessary course materials and include quizzes for hands-on experience.

—With all these, you just need to keep on practicing. You will become a master of CSS in no time.


It may take a while (depending on your skill level) to use CSS effectively in WordPress. But you can always start anytime as it is very easy to use and enables some features and visual effects that you may not find in the default theme. CSS is a basic language on which a website is based.

—Learning and implementing CSS will come in handy today or tomorrow. And don’t think it is too late to learn CSS. Whenever you start learning, learn well, that’s the key.

Editor Team

We are a group of WordPress experts (editorial team) from Themeim. All of these articles go through manual testing to reveal the ultimate outcome.