Скачать или смотреть How to Override Global CSS in a CSS Module File Using Next.js

Learn how to effectively `override global CSS` rules in your CSS Modules within Next.js projects for better component styling.
---
This video is based on the question https://stackoverflow.com/q/66217278/ asked by the user 'Tim B.' ( https://stackoverflow.com/u/5834740/ ) and on the answer https://stackoverflow.com/a/66270281/ provided by the user 'juliomalves' ( https://stackoverflow.com/u/1870780/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: How to override global CSS in a CSS module file?

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l...
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
How to Override Global CSS in a CSS Module File Using Next.js

When developing with Next.js, managing styles effectively is crucial for creating polished and responsive components. Sometimes, you may encounter a common problem: how to override global CSS styles defined in your project. In this guide, we'll explore this issue and provide a clear solution.

The Problem

In a Next.js project, you may define global CSS classes that are intended to apply universally across your components. For instance, consider a global CSS class like this:

[[See Video to Reveal this Text or Code Snippet]]

Now, suppose you have a component, Layout.js, which uses a CSS Module (Layout.module.css). Your goal is to modify the global .flex class specifically for this component to achieve a different layout.

Example Structure

Your Layout.js looks something like this:

[[See Video to Reveal this Text or Code Snippet]]

And your Layout.module.css defines styles specific to the navbar:

[[See Video to Reveal this Text or Code Snippet]]

The Issue: The styles you defined in Layout.module.css for .navbar .flex do not override the global .flex, and instead, it maintains the global style causing the layout to not split the header from navigation as intended.

The Solution

To override the global .flex class with your component-specific styles, you can use the :global selector available in CSS Modules. This allows you to target global styles directly within the context of your CSS Module.

Using :global Selector

Here’s how you can rewrite your CSS:

[[See Video to Reveal this Text or Code Snippet]]

Alternate Syntax

You can also use an alternate syntax with nested rules, which may look cleaner in some scenarios:

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

By employing the :global selector within your CSS Modules, you can precisely control how global styles interact with component-specific styles in your Next.js projects. This enables you to achieve the desired layout modifications without compromising on the global styles you have established.

Key Takeaway

Understanding how to override global CSS in CSS Modules effectively allows for cleaner, more maintainable styles and ensures that your components behave exactly as you intend them to. Give these techniques a try in your Next.js projects, and see how they help improve your styling workflow.

Feel free to share your experience or any additional tips in the comments below!