What methods exist for separating styles in CSS and preventing conflicts?

Several methods are used to separate styles in CSS and prevent conflicts:

1. Naming conventions (BEM, SMACSS, OOCSS) — using strict naming rules for classes, such as BEM (Block__Element--Modifier), helps avoid overlaps.

2. CSS Modules — in modern bundlers (Webpack, Vite), CSS modules can be used, where classes are local to the component and automatically renamed.

3. Scoped CSS — in some frameworks (Vue, Angular), scoped styles can be used, which apply only to the current component.

4. Shadow DOM — in Web Components, styles are encapsulated within the component, completely eliminating conflicts.

5. Using preprocessors (Sass, Less) with nesting and variables helps structure styles and reduce the likelihood of conflicts.

Example of CSS Module:

/* styles.module.css */
.button {
  background-color: blue;
  color: white;
}

import styles from './styles.module.css';

function Button() {
  return <button className={styles.button}>Click me</button>;
}