In Liferay's responsive design approach, what is emphasized for CSS file management?

In Liferay's responsive design approach, the emphasis on the use of media queries and the Bootstrap grid system is crucial for creating layouts that adapt seamlessly to different screen sizes and devices. Media queries allow developers to apply different styles depending on the device characteristics, such as its width or height, thus ensuring that web applications look good and function effectively on any screen.

The Bootstrap grid system further aids in this responsiveness by providing a flexible layout structure that can adjust columns and rows based on the size of the viewport. By leveraging these tools, developers can create designs that maintain usability and aesthetic quality across a wide range of devices, ultimately enhancing the user experience.

In contrast, while minification of CSS styles, organization of styles into separate files, and integration with third-party CSS frameworks are important considerations in web development, they do not directly address the need for responsive design in the way that media queries and the Bootstrap grid system do.