Why are selectors used in CSS or component frameworks?

Selectors in CSS and component frameworks are used to select and style specific elements on a page or in an application. They allow precise targeting of elements to which certain styles or behaviors should be applied. For example, a class selector .button will apply styles to all elements with the class button.

In component frameworks, selectors help isolate styles within components to avoid conflicts and ensure reusability. This simplifies maintenance and scaling of the code.

Example of a CSS selector:

.button {
  background-color: blue;
  color: white;
}

This selector applies styles to all elements with the class button.