To get the most out of this book

We recommend some knowledge of the basics and advanced CSS and JavaScript features, such as custom CSS properties or Promises. Knowing how Flexbox works is also recommended. A solid knowledge of HTML is assumed.

Software/hardware covered in the book	Operating system requirements
CSS Grid	Windows, macOS, or Linux
Flexbox
PostCSS
JavaScript

Since these technologies primarily run in the browser, they can be used on any operating system. NodeJS, used to execute some code snippets and create a web server for the accompanying project, and NPM, used to install JavaScript dependencies, are available for all major operating systems too.

To handle different versions of NodeJS, either a Docker setup or Node Version Manager (NVM) is recommended. We also require a modern browser that supports CSS Grid and offers grid tooling and a grid debugger. Having multiple browsers installed helps us to see the differences in the development tools and get used to them.

If you are using the digital version of this book, we advise you to type the code yourself or access the code from the book’s GitHub repository (a link is available in the next section). Doing so will help you avoid any potential errors related to the copying and pasting of code.