In this chapter, you have learned how to keep your code clean and test it using style guides. You have learned how to use libraries with prebuilt mixins, which help you develop your Less code faster and more securely. Last but not least, you have learned how to use Less and iconic fonts and make your projects Retina-ready.
In the next chapter, you will learn how to integrate Less in your projects or start a project from scratch with Less. You will also learn how to organize your project files and reuse your old CSS code. And finally, you will build a responsive grid with media queries.