Sass: Syntactically Awesome Style Sheets
https://sass-lang.com/
Feature Rich. Sass boasts more features and abilities than any other CSS extension language out there. The Sass Core Team has worked endlessly to not only keep up, but stay ahead.
Sass Tutorial
https://www.w3schools.com/sass/
Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, PHP, Python, Bootstrap, Java and XML.
Sass (stylesheet language) - Wikipedia
https://en.wikipedia.org/wiki/Sass_(stylesheet_language)
SCSS is a nested metalanguage, as valid CSS is valid SCSS with the same semantics. SassScript provides the following mechanisms: variables, nesting, mixins, and selector inheritance.[2].
Sass Для Начинающих: Миксины, Наследование, Операторы
https://wordyblend.com/scss_uroki/
Sass/Scss. JavaScript. Html и CSS. Sketch. Кодинг. Sass/Scss. JavaScript. Html и CSS.
Sass | WebReference
https://webref.ru/layout/sass
http://sass-scss.ru.
SCSS Tutorial | Toptal | Toptal Engineering Blog
https://www.toptal.com/sass/theming-scss-tutorial
In this SCSS tutorial, we're going to create a minimal theme and use SCSS to give our CSS programming some superpowers. Theming with Sass: An SCSS Tutorial.
sass / scss
https://css2sass.herokuapp.com/
css 2 sass/scss converter. Version 3.7.4.