Sass, or Syntactically Awesome StyleSheets, is an extension language for CSS. With Sass, you can write clean, sustainable CSS code and solve the common repetition and maintenance challenges present in traditional CSS.
to see Sass example then just go here
In addition to being a valuable skill for any front-end developer, transitioning from CSS to Sass is pretty smooth due to the familiar syntax. Sass can’t be directly interpreted by your browser, so it must first be converted, or compiled, to CSS before the browser can directly understand it. and you can use this link to do just that.
Compiling refers to converting code to lower level code so that it can be executed. By compiling SCSS to CSS, it can be interpreted by your browser and the results will appear on a webpage.
this is only introduction, for more complex example will be presented in another post.