Modern Front-End Development for Rails

Building CSS in webpack

In this section, we’re going to focus on using CSS in webpack. (For more details on exactly what our tools do when we load them, see ​Stylesheets and Assets​.) Initially, CSS was a little tricky to load from Webpacker, but there have been continual improvements, and it’s now about the same complexity as using Sprockets.

Webpacker allows you to add support for CSS as well as css processors like PostCSS, and CSS variant languages like Sass and SCSS.^[41] Sass and SCSS are valuable extensions to basic CSS, including an easier syntax for variables and nested selectors. The SCSS version of the syntax is similar to original CSS, while Sass is a minimalist syntax that is similar to HAML. We’ll be using SCSS for examples in the ...