How Can I Achieve Component-Scoped CSS Imports in React?

Component-Scoped CSS Imports in React

Introduction
Many React applications face challenges in managing CSS styles, especially when dealing with multiple components. To ensure proper isolation and avoid global styles, you may want to implement component-scoped CSS imports.

CSS Modules
A popular approach to achieve component-scoped CSS imports is through CSS Modules. With CSS Modules, class names and animation names are automatically scoped within the component where the CSS file is imported. URLs and imports also adhere to module request syntax, ensuring that styles are isolated within the component.

Example Code
Consider a React component and its accompanying CSS file:

Component

import React from 'react';
import styles from './styles/button.css';

class Button extends React.Component {
  render() {
    return (
      <button classname="{styles.button}">
        Click Me
      </button>
    );
  }
}
export default Button;

CSS

.button {
  border-radius: 3px;
  background-color: green;
  color: white;
}

Post-CSS Transformation
After CSS Modules performs its transformation, the CSS output will look like:

.button_3GjDE {
  border-radius: 3px;
  background-color: green;
  color: white;
}

The "_3GjDE" suffix represents a randomly generated hash, ensuring that class names are unique within the component.

Alternative Approach: Class-Based Naming Convention
If you prefer avoiding external plugins, you can adopt a class-based naming convention for components and elements. By using unique class names for each element, you can maintain component isolation.

Example Code

.aboutContainer {
  # Some style
}

.aboutContainer__code {
  # Some style
}

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